Yes, I'm a huge fan of getting money back. I need all the money back I can get.

5% back on Gas (Sams Club Mastercard)
5% back from Amazon (Amazon Prime Visa)
3% back on Groceries, Restaurants, Travel (PenFed Visa, Sams Club MC)
1.5% back on everything else (Chase Freedom Unlimited)

Sometimes it's hard to keep everything straight, but it's worth it.

Also, some other quick math, as someone else mentioned, going from 1.5% to 3% cash back is a 100% increase in free money. So, I spend a little bit of time trying to max out my rewards.

Go Craig Go!