Keep it.
And write down your account name and your password on a text file that you'll keep on your computer.
Then one day, maybe one month from now, one year, or even ten years, you'll think :
"Hey, i had fun playing that game. Why not give it another try ?"
And if you start again as a peasant, you'll definitely quit again.
Whereas if you start at lvl 24, with even an heirloomed item, you may stay playing for another four days, a month, or even a year.
You're indeed "wasting" your life when "playing". But the fun it provides, the people you encounter, kinds of makes up with it. You can't always live "purposefully", you need to have some good breaks. That's what games are for.