The main reason I feed f/t is because I don't want my snakes injured by an adult rat. Even if you watch them feed, there's still potential for them to get injured. Also, its easier to keep a long term supply of frozen rats in the freezer than it is to buy live weekly.
Nope not wrong at all. If its easier for you then go for it. Its usually not a problem converting them to live. Keep in mind though that once you start feeding live it may be hard to convert them back to f/t.
I prefer live, but I do breed my own food. It's easy to take it back out to mom and save if for next week if someone doesn't want to eat. Just don't leave them unsupervised. Also as mentioned it can be harder to switch them back.
There is nothing wrong with trying live. Every snake is different. It's your job to try every approach until you figure out what, how and when it likes its food
All of my snakes eat live and occasionally f/t when my rat production runs low. Ball Pythons are natural predators and I wouldn't worry about injuries. I've lost count of the live feeds I've done and have never had an injury. Don't leave the rat in there for an extended period of time and it should be fine. Good luck.