The last thing I want is updates. I smack myself if I fail to check the box re no up dates on any of my threads, though that is easy to fix. But we all differ.
It depends on the thread/s for me.
If I've started
a thread I'm certainly interested in being be notified that there have been fresh posts, via email updates.
If I've been closely following
a thread (though not necessarily posting to it much, or at all - something I often do), ditto.
Yes, you can certainly check "my posts", "my topics", "my tabs",etc, to see if there have been new contributions to a thread.
But you then have to back-track from the last recorded post to the thread & try & find the point where you were last at.
If there have been pages & pages of new posts (since you last participated) & you are going through this same process with quite a number of different threads, it can be quite off-putting.
The beauty of email updates is that they link you to the exact
spot where you left off in the discussion.
That's why I like them so much!