Nothing noteworthy about 18, except voting and easier job hunts (technically, but I had to change cities to find work still, so YMMV). 21 was boring too.
But a week from now you'll be 40.
Don't be one of those who at 40 realizes they should have been investing 20% of their income and utilizing their employers 401k match, or taking better care of their health.
The time goes by real fast. Faster than as a teen.
Or at least it tends to seem that way.
Enjoy your 18th today.
Plan for you 60th tomorrow.
Don't wait.
How's Piefed doing?