I'm going to read the article MrMako posted, but... If a motorcycle didn't need the clutch, they wouldn't have put one on there. Shifting without a clutch is best done at moments when there is no load on the transmission. I've dismantled and repaired enough motorcycle transmissions to know where the damage is done from shifting without a clutch. If it's not done right, (with or without the clutch used) and it clunks or jerks when shifting, then the transmission is subjected to irregular wear patterns. Granted that the more modern transmissions are designed much better, and can avoid some of this damage. But basically, if you shift without the clutch, eventually the way the motorcycle shifts will change from a botched shift. Usually it's felt as a difference right at the shift lever itself. Usually it will go away as more shifting is done smoothly. Any bad shift, with or without the clutch, can result in a "funky shifting feeling", that will wear off over time. If it doesn't, the damage is permanent. Crashing on the shift lever can cause internal damage also. Yes, I shift without the clutch, when I want to, without even thinking about it, if I need to. It is a skill worth learning. edit: But I primarily use the clutch in everyday riding. Note: clunking into first from neutral doesn't count as a clunk on a Honda.