Replying to My Threads Section

it kinda bugs me how when you go to "my threads" and when you click on a thread you've contributed to, and then come back later to "my threads", its gone. i think it would be nicer to just have it stay in the my threads secion permanently until maybe you delete it yourself or something. or maybe have it stay for a certain amount of time like 2 weeks or a month or something before it goes away. anybody else agree or is it just me? yea i know it comes back up when someone posts again to the thread but sometimes i want to go back to it anyway if i want to post again.