Time is precious, and I don't have enough of it to deal with people who want to waste it. The people who have my time deserve it, and the people who don't aren't worth it.
I deserve to be selfish and choose who gets my time. I'm only here for a certain amount of time, so why would I waste it on people who don't care?
I believe every person who is in and out of my life serves as a lesson. I've had plenty of these experiences, so I wouldn't say my time was necessarily "wasted." Of course, I would have rather spent it sleeping with someone who appreciated how great I am for the long run, but beggars can't be choosers.
Just think about it though, you've wasted my time, but how many people have wasted yours? How many people have you let bring you down in your life? It's inevitable that people are going to disappoint you. It's a vicious cycle. There's nothing that can stop you from feeling a certain way. We all have emotions and letting someone make you feel them isn't wrong. You can't help how you feel.
People are going to waste your time and not even realize it. We're all preoccupied with our own lives that we forget that other people have them too. There's a term for this and it's called sonder. According to the Dictionary of Obscure Sorrows, it's the realization that each random passerby is living a life as vivid and complex as your own. There are billions of people on this earth and there's bound to be plenty that don't see your potential.
I'm writing this to say thank you. Thank you for helping me realize my potential and how much better my life is without you in it. You served your purpose, and I deserve far more than you could've given me. You were a lesson and it's only made me a better and stronger person. My time spent with you was clearly not a waste, but this is not me saying it's OK, it's me saying I'm OK with it. I let a lot of people use me and treat me poorly, so it comes to a point where I can't keep blaming you. If you let someone treat you a certain way, they won't ever realize they're doing something wrong.