Ah, yes. I know exactly what you're talking about.
Most of the time, when a guy takes a look at a lovely young girl, their hormones take over whatever functions that are in their brain. Thus, they think that they're deserving of such a girl, when in a lot of cases, it's far from the truth.
The term is thus: They think with the head in between their legs, & not the one on their shoulders. Unfortunately, this also applies to girls as well, but in this case, their "other head" is above their pelvis.
From what I'm hearing out of you, I can say that you're one of those girls that doesn't let her hormones take over your brain's functions. If that's the case, good on you.