Not being able to update may well have limited you from getting battery related bug-fixes, and jailbreaking is notorious for allowing power-inefficient mods or apps to run - indeed that's the reason many people choose to do it.

I guess my point is that you knew in advance that the device wouldn't do what you wanted, so it's not really surprising that you didn't have a great experience and I think it's hard to blame that on Apple.

Personally I think that anyone who would need to Jailbreak an iPhone would have their needs better served with a good Android phone. In this regard they are simply aimed at different customers.