i do prefer to recline. i choose not to, even though the airline says that i am entitled to, because i know that reclining has a high likelihood of inconveniencing the person behind me (primarily due to loss of legroom and inability to use a laptop).
Same here; except I'll recline after dinner on long-haul flights, because that's the point virtually everyone does, especially when the lights are dimmed. I would never recline on <4 hour flights, and am irked by those who do.
(I wonder if it simply driven by an individualistic vs. collectivist mindset?)