I got Stuffy in a Low-Limit Game and Regretted it.. Thoughts?

[beset7]

So I'm waiting for a 10/20 or 20/40 seat at the muck and I'm playing 1-5 spread limit 7stud just for the eff of it. A couple guys who came together are chatting a bunch on the far side of the table and I notice that one of them who is on a cold wave of cards and has begun showing his crappy hole-cards to the guy on his left before folding on 3rd st. I bite my tounge the first time I see it. Now, a second time I see him do this, his buddy calls, I look down and have a playable 3-flush so I call the guy out for showing his friend his cards and demand to know what he folded. The dealer makes him tell the table, two of the cards were my suit and I folded.

The game lost all it's charm after that. Now, it's just 1-5 spread limit stud; should I gear down when playing lower and be more chill? It was just automatic for me. I felt wierd about it afterwards.