Do you mean end therapy or T?
I terminated with several Ts. Now I have a one I like. I do think about ending therapy (after 7 yr who wouldn't, right?). I talked to T about that. I think reasons behind are important- ending because you're afraid to discuss some painful topic, scared you overshared, feel you're unable to change (but secretly hope to), want to punish yourself... are just not good enough.
I think being done with therapy is when you like who you are/become and feel like you could use the time/money/energy on better things.