Being "nice" never works.
Well nice is great, but OVERLY NICE, is such a turn off. Being syrupy sweet is just as a big of a turn off as being overly aggressive. It gets to the point of creepiness, like Tau said. Too much of anything isn't good. I can speak for myself and many women and say that we tend to like men who are nice with AN EDGE, not necessarily a 'badboy', but a sweet man that is a little rough around the edges. I like to feel safe and loved. A man with the perfect balance of strength and tenderness. That gets my engine running. An overly sweet, spineless nice guy is not for me. It is no wonder many of these types of guys end up in the friend zone category. And then complain that women want the 'thugs' and 'badboys'. Uh no, we want confidence and a backbone.
When I was younger, a friends with benefits arrangement sounded fine, but once I became older, I yearn to spend the rest of my life with someone. Sex is extremely easy to find for a woman, but a lasting love is the hardest of all. Too many men of this generation aren't even trying anymore; they don't want to put any effort into a relationship, let alone marriage. Haha, marriage! And much of it comes down to fear and/or the belief that most women aren't for shit, even if the woman treats him with love and respect. Sad to say. It's not easy in this dating world, and as I have become older, I have lost my optimism for the world. I still have hope, but not optimism.