Re: your stance of feminism and its role in the betterment of the lives of men.
I don't think it's unreasonable to suggest that the primary problem at the core of most issues facing men today is the narrow, unrealistic, and frankly unhealthy image of masculinity that our society expects us to strive for. And I have to imagine that the (or at least a) goal of any sensible male advocacy group would be to push back against the notion that a man who doesn't meet this single societal ideal of manliness has failed to be a man.
However, I also don't think it can be dismissed as coincidence that so many of the words used to belittle men and boys who behave in ways they're not "supposed" to imply femininity.
"Don't be such a pussy."
"That guy's a little bitch."
"Haha, he cried like a girl!"
Would you not agree that one of the most powerful ways to go about robbing these types of sentiments of their power over young boys is to help feminists destigmatise simply being a girl or a woman? Most issues facing men aren't because women are being given advantages, but because men face the disadvantage of not being allowed to adopt roles or attitudes deemed beneath us — just as women are not allowed to adopt roles and attitudes deemed beyond their place.
I firmly believe that feminism, if truly successful, will allow men the freedom to be who and what they want to be because "masculine"/"feminine" will no longer equate to "good"/"bad" or "strong"/"weak".