Sigh, what bothered me about the finale for TNG was every part of the space-time continum was messed up. Boom, they die in the past, present and future. Now here's Q at the end of time grinning over Picards avatar.
Honestly I think Q was a plot-device to explain the impossible and make ultra-trekkies messed up.
I took the episode where he was turned mortal and started babbling on how to reverse the force of gravity as a side joke.
Geordie: How do you do it?
Q: I don't know, just snap your fingers.
Souded like the Wizard of Oz more then a former omnipresence deity.