This is a little tongue in cheek but what do you think?
Start out diving with 80 cu ft tank.
Move up to larger tank for more time/depth.
Become more cautious and add redundancy with a pony bottle.
Decide might as well add redundancy by going with doubles.
Use Trimix for most dives.
Decide a Rebreather is the way to go. Reduces Trimix costs and doubles are starting to break your back.
Realize that a Rebreather is overkill for most of your diving.
Return to the simplicity of an 80 cu ft tank.
Does this happen often I wonder?
Start out diving with 80 cu ft tank.
Move up to larger tank for more time/depth.
Become more cautious and add redundancy with a pony bottle.
Decide might as well add redundancy by going with doubles.
Use Trimix for most dives.
Decide a Rebreather is the way to go. Reduces Trimix costs and doubles are starting to break your back.
Realize that a Rebreather is overkill for most of your diving.
Return to the simplicity of an 80 cu ft tank.
Does this happen often I wonder?