Just sounds like you've reached saturation with your collection. Congratulations!
Your comments, especially of
"I'm not feeling bored" and
"exercising for the sake of exercising is enough for me these days." are very positive things to be saying about your fitness life.
There is no NEED to be an avid collector of sets, of all kinds of workouts, to try everything new on the market. Some people like to more than others and some people can afford to more than others, but everyone has their own priorities and preferences, both financially and otherwise.
So long are you are CONTENT, and maintaining or improving your level of fitness, health, and general well-being - sounds like all is well.
ETA - as to your question - "Does anyone else feel this way?"
YES! I stopped avidly collecting several years ago now, moving to careful choices that filled holes in my collection that I thought needed filling - turned out I was wrong on a few counts there too, but generally, the feeling of
hankering for new workouts has pretty well stopped - get a twinge now & then, but I can ignore them with ease.