I suppose Russian Roulette isn't an adventure sport so possibly a bad analogy. But I maintain your trading the buzz for your possible health.
The risks as I see it are-
Walking into propellor on ground
General risks on light aircraft
No seatbelts in aircraft in case of crash landing
Hitting tail on exit
Main or reserve leaving container in or just outside plane and wrapping around tail of aircraft
1/1000 failure on main and reserve
Hard opening
Collision with another skydiver in freefall or under canopy
Landing accident
Some of this risks can be managed by regulation many can't be and have the human factor.
The walking ,driving analogy non zero risk are true but they generally are for societies benefit and skydiving isn't generally although of course there is alot of charity sponsorship too and does employ people so not quite true