Exactly this. I have around 100k to 125k in available credit that I've requested over the years. I try to put absolutely everything and anything I can on the cards. Firstly I get at least 1% back on all of my cards for anything type of purchase but the best part is it organizes my monthly cash flow nicely. I can keep money in savings or investment accounts most of the month and move money to checking to pay the CC's off before the bills are due. I don't have to worry about just how much I have in my checking account when I make a purchase.