Is not liking vegetables immature ?

I’ve heard someone tell someone to grow up for not liking vegetables and i see this sometimes. I really don’t like vegetables, my body is fit and im not really into too much greasy foods / sweets , i still try to stay healthy but I still hate most vegetables.

I don’t like salad unless it has a bunch of condiments and protein which defeats the purpose but it just shows i don’t like it. I force myself to eat it and I want to throw up

it’s nasty and it’s weird

Even cooking it , or having it cooked it still doesn’t taste good to me

I hate it in a burger as well i’m good with just lettuce.

How do i get over this ? Is vegetables important? I can do broccoli, brussels sprouts , string beans and carrots sometimes

anything else is a yuck