You don't need to end up a goat farmer to make drum samples or record drums, as the joke goes.
Often times, if you really want to be free to do what ever you want to do, some times you just need to be free to do what ever it is you want to do. presets or not. if you have a license to use that then use it man, it'd be stupid to not.
stealing is different, and manipulation is a grey area, but i am not talking about those two ideas. It's having proper credits to use the things available to you.
another quote is that, we stand on the shoulders of giants.
Just use what's available to you and learn from it. That's the best way you have until you learn enough and spend enough time to be able to get what you want, or close to what you want.
Like, i had to throw out ANY and ALL ideas i've had in my head in order to progress in making electronic music.
Perfection is the enemy of productivity, a quote often from my pop who does high level consulting for several companies. I think he's a Lean six sigma master black belt, but he knows he he is.
Clear your preconceptions, understand what you can use legally, use it, and take the time to get better. The last part in conjunction with the rest of the list is what will make you have experience.