I am sorry – I had no wish to be offend anyone though I don't understand where I was "condescending".
I wrote as I had found by a lot of shopping around and trying a lot of free or low-cost CAD packages. I wanted to know: their value for engineering designs, their relative ease of learning, and obviously, price.
I was disappointed to find most virtually useless for mechanical engineering. They were probably good for their intended purposes, mainly landscaping and kitchen design. The nearest to engineering in these packages were electrical circuit-diagrams and process flow-charts.
Others were potentially more useful for mechanical engineering, but peddled as "free", "student" or "trial" versions. These proves just introductory, with useful features labelled but switched off. The real versions were costly, as they were aimed at commercial companies and educational establishments.
I did find one giving engineering-drawing features, apparently free and reasonably simple to start using, but I think that too was a limited form of its real editions.
SolidWorks & SolidEdge are used extensively in industry, including by my employer, and by the college that is home to my model-engineering society; so it gave me an insight into CAD. However, is not available for private users, as far as I could determine from its own web-site which does not even give the price. If you have to ask…
So having rejected quite a number for failing my tests, I looked at two, and now three, professional-quality ones available to the amateur.
In chronological order of experience:
TurboCAD was not free but readily-available, a one-payment purchase, very reasonable price, complete and with a sizeable Users' Forum that compensates for its own on-line "manual" being poorly-arranged and only really an aide-memoire for experienced users.
I had a bad start though as the training CD supplied with it, proved faulty. It walked me through drawing a rectangle, putting two "holes" in it, slotting one to the edge… It said "press Escape" to complete each step, but at some point Escape turned itself to Delete and erased the whole drawing!
I am still trying to learn TurboCAD and can now draw fairly-adequate 2D views but have more or less given up on 3D modelling with it, as I find it almost incomprehensible. Its Users' Forum Gallery shows exquisite engineering and architectural renderings but such work is all beyond me.
Fusion 360 is the only CAD package available genuinely free to private users, and in full version. I found its presentation and look-what-we-can-do approach off-putting though; as was its lack of instructions. After a hopeful start I was rapidly baffled.
My first attempt was encouraging. I soon drew a simple square plate with a large central hole and "bolt-holes" in the corners (e.g. a pipe-flange), dimensions too, and saved the drawing. On my next session I discovered the "pipe-flange" still existed but as an isometric rendering with the dimensions deleted, and nothing to help me understand why.
TurboCAD's gallery is at least by users. Fusion's web-site "look-at-me" pictures, by its staff professionals, and its over-enthusiastic approach, very disheartening. If I can't draw a dimensioned flat plate with five holes and save it from one session to the next as I'd left it, fancy pictures will be beyond me.
Allibre is the new-comer. I tried it, to see if it is easier to learn than TurboCAD and Fusion whilst still letting me produce what I want from a draughting programme: engineering-drawings!
It's certainly friendlier and more welcoming than Fusion, and seemed easier than TC. I managed the first instalment in MEW but that's all, and now know it will be quite expensive. I began to feel I was not learning Alibre, just following instructions to draw a scribing-block, using Alibre. It showed me what Alibre does, but greatly widened the gap I felt between exercise and own drawings.
Anyway, it's not really logical to make some progress with one package then start from scratch with another that will cost more than TC and cannot read my accumulated TC drawings.
I appreciate advanced software is very expensive to produce and the publishers need to recover their costs and make a profit. I don't expect anything genuinely free and I was surprised that Fusion360 is, for private use. In fact I tried F36o twice, and noticed that on the second go this service was far less explicit on the Fusion site.
I do not mind subscribing to a magazine – that's no different from buying it an edition at a time in a shop, in fact it can be cheaper. However, I would far rather buy software outright than subscribe via an open-ended arrangement at prices that are small change for a large company using it intensively, but prohibitive for an individual.
To sum up, my best course is to stay with TurboCAD. I have it, it's paid for, I will never be very good at CAD; but at least I can use what I have so far, to make simple orthographic drawings adequate for my own workshop use.