I'm not a fan either. Most people who have skinny legs don't want their legs to look "chicken-y" and therefore don't wear these. Most people I see wearing them...shouldn't be.
Regardless of body size/type...I don't think they look nice at all. I would prefer to see someone in jeggings if they want a "fitted" look. And men wearing skinny jeans is just...
I like men in skinny jeans, if they're the rail thin hipster, studenty type. My heart belongs to Matthew Gray Gubbler and his ilk

Also I don't believe in the body fascism of not wearing something if you're not skinny etc. I have not a problem with seeing the real curve and shape of someone's body, I don't think clothes should always be forced to make you look as thin as possible, I really like when people emphasize their shape with tight fitting clothes. Who am I to judge when someone shouldn't be wearing something?
I'm a size 18, rocking the skinnies today, not caring what other people think
There are far worst things to wear than skinny jeans if you're talking about things looking unflattering, like "mom" jeans which people are devoted to! But then if I was on the other side of 30 I'd probably say the opposite.