Hey I get that its frustrating when things don't work straight away. We live in a world where we have everything at our fingertips in an instance, which makes us forget the woes we had when computing was actually a hobby.
But there are a few thing to consider though (and I'm not having a go, btw)
So is the C64 stuff, actually older, and I find that C64 stuff is 65783216789321678% more reliable than Amiga stuff!
The Amiga is a lot more complicated than the C64 too. Generally more complex means more things to go wrong, having said that all of my Amiga stuff works as it was supposed to most of the time. If it doesn't it's usually due to something that could have occurred even 30 years ago when the machines were a modern marvel.
Amiga - Power up monitor. Wait the monitor power button has broken. Gotta stick it in place with tape.
Poor design on the monitor part - but every single button or switch has a limited number of transitions, and after 30 years it's likely that the limit has been reached, and i'd bet that the number of transitions it survived was higher than it's specification.
Alright now the Amiga. Oh it gurues on boot wtf...somehow the RAM epansion needs reseating.
In all my years of Amiga computing I have never needed to re-seat a card. The only times I would ever imaging that would happen would be if I had moved the machine around a lot and the cards weren't a particularly snug fit.
Alright, now again... it doesnt find teh CF card inside... what the hell... reseating it.... ok try again... now it booted to workbench
As above.
, let me open a shell, left-Amiga+E.. nothing.. wait... oh, my membrane doesn't work.... ETCETERA. Maybe next tiem it won't work. Sometimes software just crashes randomly. It's just PAIN.
Sounds more like unreliable software or hardware.
What I will say is that I have more random crashed using so-called 'modern' Amiga upgrades which are more of the open-source or otherwise low cost addons. All my hardware which uses original classic Amiga accessories are rock solid and only ever crash when I try to do something which I shouldn't (such as using the wrong libs/devs etc)
Never had the problem with the keyboard membrane, but I have never owned an A600 so maybe they were cheaper/poorer quality.
I love the Amiga but I also quite had enough. I'm sticking to my C64.
On the Amiga most of the money I spend is repairing it. On the C64 all the money I spend is upgrading it!!!
I'm also a C64 addict - so much so in fact that I developed an new SD card accessory for the C64 as part of my final university project (yes, as a mature student

) which I passed with first class honours, so I literally have the C64 to thank for my current career.
That said, over the years I have had to replace more C64 PLAs, CIAs, SIDs, RAM and ROM chips than any Amiga part... and the less said about the C64 PSU, the better!
The fact that Amiga hardware keeps going up in price does not help, it's like people who own Amiga stuff and want to sell it think it's made out of gold.
True, but the fewer that are available, the more prices will continue to rise, and it will happen with the C64 too - but slower as there are probably way more in circulation than Amiga's.
Regardless, I find these posts interesting to read. Please don't interpret this as having a dig or jumping to the defence of the Amiga.. but just try and have patience and you will love the machine so much more, hopefully for many more years to come!
Regards