I have never thought much about the freebies with credit cards until I read this thread. We are self employed and always pay the company bills with a debit card or write a check. I applied for a Capital One Venture card and got a 30K credit line with 40,000 mile credit, plus 2 for 1 miles on all purchases.
I checked with my landlord and he will take the card for rent, plus 90% of the supplies we need at work I can use the card. Just the monthly expenses at work that I can buy with the Venture card runs about $12K a month that I used to use a debit card to pay. That's almost 25,000 miles a month.
Maybe we will get to the island a little more often.