3 years - no ring

I just kinda wanna rant? My bf and I have been together almost 3 years. We've talked about marriage since early in our relationship and we know we wanna get married and have a family and etc. Most of my friends are engaged already and some have been together less time than us. I love him more than anything and I can't imagine life without him but I don't wanna wait forever to get married. I'm probably just overreacting bc I feel so left behind everyone else I know, but I feel like he may never propose. Idk what to do guys. I bring it up to him and he says we'll get married when we're situated enough (money and etc) but sometimes it just feels like an excuse. idk y'all. what do you think?