Sounds crap! But by now you should be able to beat the crap out of them.
Guess they just want you to be able to protect yourself? ....... prove you can!
Myparents are maikng me and my younger brothers take karate classes, and we HATE it. I've told them that i don't want to do it anymore and i'm not interested in taking karate classes. but they still don't do anything about it, and i've been taking karate for 4 years now
how do i convince them to not take me anymore, without rudely confronting them?
if i was in your position i wouldn't be able to have conversation with my parents about the karate situation without arguing. well arguing or them not listening what i was trying to tell them. so if i was you i would write a letter to them ( i know it sounds silly because they are there and you can talk to them) but if you write a letter the points that you are trying to tell them get across clearer. in the letter let them know exactly how you feel without being rude and maybe suggest some other activity's you would like to do instead. and if you don't know what you want to do just keep trying different ones until you find one you like doing. the letter will also help because they are reading it and they cant just change the subject. i hope this helps and good luck hope you find something you like to do.