I'm 16, i've felt this way for around a year now. Its hard since minecraft has lost some of its heart and soul to continue to play with the same love; but I still play often and I have a fairly good group of friends my age or much older that play too. I understand your concerns highly and I constantly go back and forth, but at the end of the day do what you enjoy, you may not have the same nostalgia or the same feeling when you play, but theres for sure people our age and much older that play.
If you wanna talk more in depth or play add me on discord or pm me on planet minecraft, discord is Vain#2468
