I know exactly what you mean. However, for me it's a little more than just boredom. Anytime I play a game while not recording it, I feel like I am doing myself a disservice because if I ever do decide to record it, I would have already spoiled it. Which means even less of a chance I will ever actually record it, because I feel like if I did, the video would be boring due to already knowing what is going to happen.
The other issue is when I am playing these games without recording, I begin to ask myself "what's the point?" It would simply just be another game completed and at the end of the day it means nothing. That feeling is what actually got me started wanting to youtube in the first place. I just wanted more from my gaming experience. I wanted to feel like I was actually doing something more interesting with my time. To share my experiences with others, rather than alone.
I feel youtube just makes gaming a whole lot more interesting.