Hehheh, I don't think that you could stay in a lucid dream forever, unless you actually can make one year seem like one minute.

You shouldn't be scared by it though. I mean, it's probably impossible for something like that to happen, unless some freak accident happens, and you go into a coma, but that could never happen! =P

Lucid dreams can be fun though, they can be used as a recreational activity, to experiment, to shop, all kinds of crazy things. Since it's your dream, anything goes.

Yes, if someone is going through a rough time, it'd be easy to see why they wouldn't want to wake up, but I read somewhere that people shouldn't use lucid dreams as a way to escape reality.

You shouldn't worry about staying in a dream forever though, because everybody wakes up. Whether it be from a cat licking your face, (so long it's not the cat in my picture) or from an alarm clock, all dreams come to an end.