I use eBird all the time. I use it to find out what species I haven't seen for the year, to see what others have been seeing in my area, and to keep track of my county list (and where I rank).
The thing about eBird is you have all sorts of people entering data. Some just randomly enter a sighting because they feel like it and include as little accompanying information as possible. Others try to get an exact count of every single bird they see and include all sorts of details about each species they see. I imagine these are the same sort of people that take a notebook to the gym to keep a record of each exercise they perform and the number of sets and repetitions. That's something I never bothered with.
I make lists of most places I go but if I don't see anything new at a popular location that I was recently at then I might skip the list altogether. I do like to enter a sightings list for new places that no one seems to visit. To me, that is the most interesting data and I also like to read others entries of new places.
So I'm not exactly the Perfect Ebirder but there is interesting and helpful information that you can obtain using eBird so I will continue to enter data at my leisure. Maybe when I'm retired I'll try to be a little more thorough.
