Why can't I view all the comments/replies I have made?

Recommends and replies are shown together in my profile. So, since I upvote/downvote more than I reply, comments made a few hours ago disappear from my profile and I cannot know if anybody replied to my comment.

Please show a bigger list of my activities, show all my comments (better) or create an alert system so I can be notified when someone replied my comment (even better).