Well, I'm sure a part of us all hates Nokia for not realizing the full potential of the n900. Unfortunately, no sane hardware vendor is going to make a 100% switch to open source overnight, and so the n900 just stays a niche product for now. Therefore the software support isn't quite what it should be, or at least things aren't as polished as some of us expect. I know there are some hardware issues with the phone too, but if you're careful, they shouldn't really affect you. I myself can't live without the ability to install whatever I choose, and this fairly open operating system gives a very large range of customizations. Obviously you have different priorities, and would be happy with some other jail-broken or rooted phone with better battery life, smooth scrolling of whatever useless apps you can find, assuming your next phone even has multitasking... *sigh*
I can sort of understand as I've purchased 5 Nokia devices now (8390, 6600, n800, e71, n900). The 8390 was the only good stable one, it got run over by a car and was fine even. 6600 was fat and slow, n800 and e71 always crashed. I wanted to stop buying Nokia stuff about 3 years ago, each phone or tablet I bought after the 8390 has been a let-down, but the operating systems and hardware even always look so good on paper, I can't resist

Try not to buy an N9, or whatever the next maemo/mego phone is or we will all have to laugh at you :P