to date, or not to date. That is the fucked up question!

if I am ready for a big ass step. I want to start dating but I am terrified! if any widows have advice for me let me know. I am so tired of being alone, I need that support, that comfort, that affection. I got so used to it and I know it is soon and I am constantly going back and forth in my head about it but I really just love being in a relationship....I want to be married.....I want kids.....how does that happen if i don't start dating someday!? Why keep waiting, life is for the living, right? Why wait? (ok I know there are hella reasons why, but i really want to know the legit ones). HELP ME.