system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why I would want to use a credit card instead of a debit card.

I think I understand the basics but I'd like to confirm what I think I know.
Update: thanks for the wealth of advice. I think the most compelling reasons boil down to:

1) boosting my credit score which is useful for other credit cards and loans and such.

2) Perks from credit card companies that make using them more worthwhile (ie sky miles, points etc)

These benefits are contingent on being a responsible credit card user and paying your bill in full monthly.
gpt
Let's say your favorite candy store had three prices on everything: one price for people paying with debit cards, one price for responsible people with credit cards, and one price for irresponsible people with credit cards.

Your favorite candy is $1 for debit card people, $1.14 for the irresponsible kids, and $.99 for the responsible credit card users.  It might not be a big difference, but you realize that since you eat hundreds if not thousands of these candies a year, the savings add up over time.

The reason for this is that when you're irresponsible with your credit card you build up debt and that candy you bought will wind up costing you more.  Debit cards are like paying with cash you have, so that's no difference.  However some credit cards will give you rewards in the form of points or cash back that usually comes out to 1%.

Yes, the irresponsible person is also getting points but it's a drop in a bucket compared to the debt they're racking up.  However the responsible candy-buyer is paying his candy tab every month and after buying 1k candies finds he can get 10 free candies via the points he accumulated.