Well, it's a blessing and a curse. Discover has been the kindest (or most evil) to me and annually (sometimes more often) raise my limit.
That's just one of about 5 major CC's.
My gold Amex card technically has no limit, however paying the total balance each month is required.
Oh, and here's a bit of advice NEVER use cash advances! Not only will the interest be incredibly high, but it will be the last of your principal debt you will pay off.