Strong title, because besides the obvious reproductive role women play, men still NEED women.

talking about heterosexual relationships

Most men I know, and the usual stereotypes around the world, are very content with what they have in life and aren't really looking to gain anything other than money and muscle.

I feel as if men are ambitious, but not in the right way, at least not the majority of men (not talking about the top 1% of successful people).

Living in a small apartment, ordering takeout and playing videogames is pretty much a routine for a lot of young men. Wasting time and not making anything out of themselves.

Women provide that hope and ambition to a lot of men. They're the inspiration behind their deeds.

I always observe a MAJOR POSITIVE CHANGE in men I knew prior to a healthy relationship, and seeing them after it.

Usual improvements: - how they dress - more confidence - less tense and much more relaxed - interested in great many things - more passionate about things - pick up different hobbies or activities - seen more of the world - more cultured

No. I'm not saying men need women in order to be any of those things, and they can't be those things on their own. But in the majority of cases, they do need that push their woman provides for them to do these things.