I used to use Haha (or hahahaha or BAW Hahaha!), and scoffed at those who wrote Lol. Then someone I love (my sister) would use lol all the time in texts & I got used to it. Now I use both. I’ll use lolz & zomg, but not the lmbo (or lmao, which I find inappropriate, but that’s because I’m a lady).
Sometimes, it really does take just knowing someone who you love to make you more tolerant. Like Sen. Rob Portman and his son.
Sometimes, when something tickles me so, I’ll use ROTFLSHMSFO (rolling in the floor, laughing so hard my sombrero fell off).