Advantages: Have a life, find out what you really want to do, find a decent girl with a good ass (full homo/10), get a job, do whatever u wanna do/have time for anything in the world, get friends, new people, new life, get shredded, slay chickens, go festivals with shirt off, eat clean, train hard, travel overseas, possibly win a lottery ticket + no need for UNI
Disadvantages: (when you graduate, you'll need to go straight into workforce, so you would unlikely have time to have before joining, otherwise you'll likely forget shit & have change on minds on career choices which you cannot change as you've already wasted years in UNI)
Attention: You may think, be peer pressured to go to Uni ASAP. But when you graduate, you'll be at the stage to start officially working, plus it would be WRONG to take a Gap year, as you would forget skills learnt = waste of time/life.
Overall: This is why Universities, encourage Gap years. It is worthwhile and beneficial and will be an opportunity to grasp without regret!
Hope, you take a Gap Year. You'll open up many new aspects of life.
Take care mate, get shredded and enjoy life to the fullest.
Regards
LUL.