I'm definitely a Sam and I say, don't be surprised, people with high intelligence try things. For instance, Sherlock used to depend on coke, and that only started with curiosity on trying to figure out what it does with ones' body.
Quote from Supernatural 12x16 │ Dean Winchester: Man. Those pillows, right? The little chocolates that they put on? I mean, I’m ruined, Sam. Those limey sons of bitches ruined me. I even took a swim this morning. Sam Winchester: You brought a swimsuit? Dean Winchester: No. Sam Winchester: Ugh.