There is no comparison between HotMail and Gmail. To me Hotmail is crappy and Gmail is the best.
Three reasons why I like Gmail more are that first you can almost forget Gmail after creating an account and you don't have to reactivate the account when you visit after a long hiatus. Secondly Gmail downloads messages in a client with POP3 for free. And finally the size of their message store is unmatched.
If I think a little bit more I can find many other reasons. My first e-Mail ID was Hotmail but I abandoned it after just about a month of use over a decade back. It might have become great since then but I would not know now.