Did try both Shutterstock and Dreamstime a few years ago.
Sold maybe 3 pictures for a total of ~ 50cnt.
It was a lot like being on drugs I imagine. You had to log on every hour to see how your pictures were doing. Was a relief when I deleted them and my account.
Now I do prints for my enjoyment and put some things up on Flickr. Prints and digitals. Peace of mind aquired.