Honestly, my first thought was the same. I too do not do hhgmm..."stuff". So whenever I started to lucid dream I would look for hot girls and...well... You can guess. But I got sick of always waking up disappointed that I didn't get to do anything really cool while lucid dreaming. My solution (which really works) is that whenever I see a dream sign in waking life and do some reality checks I think "if this was a lucid dream what would I want to do?". And now I came up w/ a short list of goals that I rethink after reality checks. Now in my lucid dreams I can easily think what I really want to do.