Not at the expense of others, including your parents. I had tons of fun in my 20s, traveled, partied, etc. But first I graduated university, got a job and moved out of my parents‘ place.
And there’s more to life than fun, such as satisfaction, and the pleasant sense of accomplishment when reaching life’s milestones. In my 20s I graduated university, got a job in a field I enjoy, got married, bought a home, etc. You may look at all the fun I gave up to accomplish this as sad, but when I look back on my 20s I can say I’m satisfied and pleased with how I did, setting the foundations for the life I continue to enjoy today in my 40s. Sure in my 20s I had fun too, but I can’t imagine mooching off my parents once I was finished my education and working full time.
IMO, your parents' role is to get you educated, employed and out. Don't be a
KIPPER.