Another example: Why do you think women (speaking generally here, didn't think I'd have to point that out but apparently I do) have long hair so much more often than men do? Because society tells us we should. Yet I'm sure lots of individuals would claim "oh no, I don't care what society says, I have my hair long because I just love it that way and it looks great". That's the whole point. You think it looks good because society tells you what "good" means in terms of feminine appearance. If we didn't care what society thought we'd just shave it down to a buzzcut I guess. Much easier to take care of that way
You always need the generally speaking caveat, before people post that thats not their opionion, so you are wrong.
See @Natasha9511 post 
If long hair were genuinely worn because people preferred it, men would do it too. We’d have a roughly even split of men and women with long vs short hair.
I bet men will tell you they prefer short hair because it’s easier and cleaner or whatever.
Same with shaving. If it were genuinely a free choice, and it felt better or whatever, men would do it too.
Why shouldn’t men feel cleaner, or do it “to rub their smooth legs together like a cricket”, or because it’s basic hygiene?