I think what's interesting/telling is you view (3) as less desirable.
Alternatively, you could have spent that half hour on the train exercising your own creativity to try and satisfy your curiosity. Whether you're right or wrong doesn't really matter, because as you acknowledge it's not really important enough to you to matter. Picking (2) eliminates all the possible avenues that might have lead you down.
I'm not saying one is better than the other, just that you're approaching the criticism on the basis of axioms that represent a narrow viewpoint: That of someone who has to be "right" about the things they are curious about, no matter how trivial.
Alternatively, you could have spent that half hour on the train exercising your own creativity to try and satisfy your curiosity. Whether you're right or wrong doesn't really matter, because as you acknowledge it's not really important enough to you to matter. Picking (2) eliminates all the possible avenues that might have lead you down.
I'm not saying one is better than the other, just that you're approaching the criticism on the basis of axioms that represent a narrow viewpoint: That of someone who has to be "right" about the things they are curious about, no matter how trivial.