A lot of people kiss their pets or non-human animals in general. I find that very weird. I understand that it is a sign of affection but it seems so off. One reason is that I doubt whether animals really understand this. Also it seems to be on a level of intimacy to me that I find weird sharing with a pet. Not necessarily romantically or sexually (that would be even more weird and wrong and probably illegal). But it is still "more". I am not sure whether I can really explain why exactly I find that weird.
Anyway, what is something that is weird to you but not to most other people?
Can you choose not to breathe or drink? I'm all for people electing not to have kids, but eating is a biological necessity for life. Your analogy isn't the best, mate. You're arguably not controlled by your biology when it comes to reproduction, but what about sex drive? Does that have no impact on your habits or lifestyle? Again, it's possible, but not the norm.