I have received a letter from my credit card company increasing my credit line and when I spoke about this with a co-worker, they told me that I should request that the company does not increase my credit limit because it was bad for when I want to get a mortgage. I have low credit utilization which I think is strengthening my score. I pay my balance in full usually the same month that the balance accumulated.
How does having an increased credit line effect when I want to take out a mortgage? Does it mean I pay more on the mortgage?