Kinda weird question about but here goes, i was working down at the salvation army shelter and this old?

guy kept hitting on me all through dinner. granted he is some street bum/person, he must be like around 75 - 80 years old where i am 18. the odd thing is, even though he is dirty and not exactly a looker, he was pushing all the right ons and i was actually thinking about bringing him home to spend the night with me. could someone tell me what is wrong with me? what do you think of a teenage girl having with an old guy? how many teens/young 20 somethings do you know had with someone old enough to be their great grand father? whats your thoughts?