I recently watched HBO’s The Time Travelers Wife full well knowing there was only one season. I think I mostly regret it. I loved the show, and knowing there won’t be any more to watch has bummed me out for the past week. I can’t remember feeling this way about any other show - it sucks.
I avoid them like the plague. Since the streaming services are dropping their shows mid story all the time now I do not watch any new series unless I know it has been finished.