Credit card churning is a process where you open credit cards for the sole purpose of earning welcome bonuses and other benefits.
Most often credit card churning involves the closing of cards after any bonus points post to the account and before the next annual credit card fee is charged.
There's no limit to the amount of credit cards a person can have but having too many credit cards could get you into severe debt that can be hard to get out of.
Too many credit cards won't hurt your credit as long as you use the credit cards responsibly.
However if you use too many credit cards and don't pay them back then they could hurt your credit score.
There's not really such a thing has having too many credit cards.
However you could have too many credit cards that you cannot pay off which can hurt your credit.
Generally it's a good idea to only have 3 credit cards and use them responsibly and pay them off on time to help build your credit.
If you have more credit cards and use them without being able pay them off then that can lower your credit score.
Having accounts open with a credit card company will not hurt your credit score, but having zero balances will not prove to lenders that you are creditworthy and will repay a loan.
Lenders want to make sure you repay, and that you will also pay interest.
There is no ideal number of credit cards you can own.
You can own as many credit cards as you want as long as you are eligible for it.
However, having multiple line of credit can make you look like a desperate borrower and increases the overall available credit.