Not everyone lives their loves in vain, but it doesn't matter how people live their lives because eventually no one will know who they were or anything they did.
and exactly how many years is "eventually"?
He achieved happiness. Which means nothing. So no.
He loving provided entertainment for several kajillion people in the world. Minecraft sales passed the mark of at least twice the Earth's population if i remember correctly.
I quite enjoy life.
Why the forget enjoy life when it's ultimately pointless?
You're not drawing anything, you're not providing entertainment, hell, you aren't even building a house.
Why aren't you buying a rope?
You're effectively saying nobody will give a damn about us or know what was happening in, say, 1942. Don't you know history books/lessons in schools exist for a reason?