Apply For Credit Card No Credit Needed

Does it affect my credit rating if you apply for credit cards, primarily for the bonds?
I do not need more credit I always pay my credit cards on time. So I want to do is ask the credit card, the requirements for bonus points / certificates, etc, then cancel the card once you get more points. I pay the card in time, no accumulation of debt, without applying for a mortgage either. Is this affect my credit score? If I do this several times with a bank, is my chance of being approved for a card? Thank you very much for your help.
Yes, it affects negatively. Each time you apply, the credit card company checks your credit record, making an investigation difficult. You lose points for having information. If you already have a high credit rating, it really affects you if you have a bit worse because each request will cost more points on average. Also reduce your chances of being approved, as companies look for in a credit card frenzy as someone who desperately needed credit and are more likely to make a huge balance and unable to pay. I do not really like the potential of radiation.
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