I guess I'm in a very tiny minority here. A robusto would take me several hours to finish. I get distracted by what I'm otherwise doing, like typing this note, find that the cigar has gone out and relight it as required. For example, I solved a vexing computer bug this morning at about 7:20AM and lit up a Maxim's corona to celebrate. It's now 8:30 and I notice that I've smoked only 1/3 of it.
When I take a smoke break at the office smoking patio with my friend I find that the 1/3 would go in about 20 minutes. I don't really like that. It makes me feel that I've done more than I like to do and leaves me a little queasy.
Some people have remarked that they think I'm a heavy smoker, judging from how often they see me with a cigar. But they don't know how to count the dormant time. That's why I'm confident to say that I only smoke one larger size cigar per day.