Are ALL guys immature until the age of 25+?

I met my girlfriend in high school during our sopre year. I was 16 she was 15. I am now 20 she just turned 19. We both have been very committed. We went through everything together, learned our life lessons together and became much wiser together. Just in those 4 years we have history, lots of things to remember and share with others. So not not all guys under 25 are immature, many are. I stay away from those type of people most of my friends are under 25 and all are very mature, and serious about their future. Some of them including my self are small business owners, being immature would not get me any clients. I do however have time and place to act silly. As far as the relationship goes, its the most important to me. More important than the business its self, more important than money. Those who say money over bitc&'s fall under the 25 and younger immaturity. It doesn't take a nerd to be mature ether, non of my friend or I are nerds, we are actually far from it. We are just serious individuals with high morals.