I'm 35 and have exc. credit. See I had several credit cards and payed them all off thru a refinance several years ago and have a fairly large line of credit on the place if need be, much better rates. So.........if you want to build credit go for it, but treat them with respect. A lot. They can ruin your life, one of my brothers owes over 60k on them and has been tied up in bankruprtcy for almost 2 years now. Part party party--they are NOT for that purpose, however Citibanks slogan of "Live Richly" will make you suspect otherwise. They profit most from your fuckups, and are just waiting for you to fall into this trap. I get between 10-20 offers a week, mostly from Capital1.