Wish I could take a photo

There are times when I see something that would make a good photo, but I either don't want to look like a knob when I take my camera out, or I don't think it's a good idea to photograph people I don't know.
I wish I could take those photos, they're often interesting.
Just then for example, there was a group of 4 or 5 people sitting together on the bus, all asleep. It looked awesome. I wanted a photo. But I didn't get one.

Listening to: Traffic Noise (I haven't put my headphones on yet... and probably won't today, coz I don't feel tired, and I want to read)
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