I'm writing this as somebody coming back to some old online games seeing the state of them feeling sort of somber, Blockland being one of them.
I think fondly on the good times I had, but I'm sad for all the things I missed that were either before my time or that I didn't appreciate and explore the possibilities of.
If I had anything to say to future generations of online gamers, I'd say you miss what you missed. Experience everything before it's gone. Make the best of a community and a game you love. Don't contribute to the negativity of it, and make great things to keep it around longer and make it worthwhile. Make friends, explore the community and everything it has to offer so you don't look back thinking "Man, I wish I'd gotten more out of that game".
I hope that the kids that are my age when I got this game aren't stuck with gachastuff and app store trash. Video games are great, I'm glad some were so important to people that they spent their time making them even greater.