The *heart* behind contraception and NFP are identical: exerting control over fertility.
Don’t play this holier than thou game, thinking that you’re somehow better because your form of birth control is approved by Rome.
You're right, in a certain sense, that NFP can be abused if there's a contraceptive mentality behind it. But when NFP is done for the right reasons, it preserves openness to life, whereas contraception completely thwarts it.