Do you think it's because you'll be compelled to stick around if you decide to talk about it before quitting?

For what it's worth, in my experience, termination hasn't been traumatic.

With former T, I made the decision to quit only after I'd tried really hard (as she also acknowledged) to stick it out. Once, I made the decision, I spent exactly one session (the last one) telling her that and then left.

It sucked in terms of my feeling a sense of loss and for a long time, I'd keep comparing her to current T but that wasn't really unbearable or anything.

With current T, I'd found another sort of viable T but I was genuinely unsure of whether to leave or stick it out or see both of them for a while or take a break from one and see the other etc. I'd discussed it with the new T and came to the conclusion that I should just talk about it all with current T and see how it goes.

So, I talked to current T and told her pretty much my whole dilemma and all my options and somehow in that session, she "came through" strongly enough for me to feel like it was worth it to stick it out with her rather than switch (at that point anyhow) to the new T. I did though like having the option of potentially being able to see the new T if things got bad with her again -- new T had said I could come back any time.

The ruptures with current T (leading to me seeking a new T) were gawdawfully painful but not the actual session / talking about it etc. I'm fairly certain that even if I'd decided at that point to leave her, I would've done so with a sense of okay-ness / peace because it would've been from a sense of not being seen / heard by her. So, either way, I would've felt like I'd done the best I could and that'd be that.