A quick post on this stupid cold morning (even here in The Sunburn State®).
So, you could care less about The LUFS Standard and will just mix and master your track or project so loud that it will blow out your listeners eardrums on the first listen.
Fine, go for it. It's your music.
Just remember that if you ever want your tunes to be on one of the major Music Streaming Services or on The Tube Of Yous they are going to turn the level down for you.
If it hits the Broadcast Airwaves it's going to be turned down even more.
Would you rather have control over what it sounds like when it gets turned down, or do you trust the Providers and Networks to do that for you?
LUFS ain't going away kids - it's a Standard and a Broadcasting Law in the US and Europe. Start adhering to it now and you're futureproofed, but if you do make headway in the Industry you'll have to invest time and money to remaster your older works.