Your logic is faulty. If it's not a real amiga, you can't discuss which is more convenient and cheaper amiga. It's like I state fake diamond is not the same as real diamond and you stating "this diamond is a lot cheaper and convenient" already presuming it's the same. And your 500ns polling of joystick is a straw-man argument. And by the way "convenient" is a subjective term.
Your diamond argument is totally worthless since the context is utterly different. Unless your computer is a fashion accessory (hmm, mac lol), what matters is that you can use it.
In use as a computer platform* UAE has all of the advantages I cited. If you already own a PC, the cost of setting up your emulated amiga is, well potentially nothing. Yet it will do pretty much everything you could ever want a genuine hardware amiga to do. 500ns joystick polling aside, maybe.
Your diamond analogy might be better if it were in relation to drilling purposes, but then industrial diamonds are relatively cheap anyway, since they are totally unsuitable for jewellery. What's more, I don't think any normal woman is going to reach for her DeBeers special to wear on a night out on the town when her cheap and cheerful cubic zirconia is just as sparkly in the club and a damn sight less of an issue if lost :lol:
PS, I'm glad you realised
your 500ns joyport polling argument (as an example of ways in which the amiga was way ahead of the PC) was, well, a poor one. A more domain specific example you'd be hard pressed to find. Especially given that the old soundcard "joyport" traditionally isn't a standard bit of PC hardware anyway.
You might as well have said the amiga is streets ahead in having a real 68000 based CPU than a PC. I mean it's true, the PC will probably never catch up in having one...

*As a cool looking machine on your desk, I'll certainly agree with you that the classic Amiga wedge is hard to beat. I still think the A500 looks simply beautiful even now. I never liked the A1200 form factor much at the beginning, but it has grown on me since.