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. Anyway, back to the topic. Hmm... how about not surfacing until you're sucking vacuum out of the tank? Solo diving to 200ft? The problem with DIR isn't its equipment configurations or skills, which actually make a lot of sense most of the time. The problem... well, there may be a few, but they've all been mentioned before, many a time. No point in waisting time being redundant, eh? 
landlocked once bubbled...
Top Ten reasons for being a stroke.
1. You get to use a computer and rot your brain.
2. You only need one BC instead of an aluminum back plate for diving wet and a steel one for diving dry. Don't forget, you can miss out on owning a good collection of wings as well.
3. Your backup light can cost less than a $100.
4. You can do your workouts with a good book and a bowl of nachos!
5. You get to use high pressure steel tanks.
6. You can enjoy hanging with the buddies after a training class rather than passing out from exhaustion.
7. You can use all kinds of new toys to convolute your inflator hose like subducks and air2's.
8. You can wear pink flippers.
9. You can drag your gauges anywhere you want.
10. You only have to learn one way of kicking!
