+1

Just chill. There are all sorts of legit reasons to get an MO. I once bought a car for $9000 and the seller wanted MO. I went to USPS to get them. If someone asks (which happens 1/100 times) I tell them we use them for budgeting in our family, or I tell them it is for a kid's camp in the summer or piano lessons or something. 1/500 times, an uptight employee at a certain grocery asks if I am using a gift card and says they don't accept, I say thanks and go down the street to the next store, or go to that same one 8 hours later.

Your biggest challenge is to get over your own feelings. You know you are taking advantage of cracks in the system to make some $ and feel like you shouldn't be able to. In reality, the steps you are doing are completely legitimate and done by other people every day for all kinds of reasons. You just need to step up with that mindset, and save your guilt for when you are looking at your bank account statement or point balances, it's a lot easier that way.