Had one on each side
Inguinal hernia that is.
Had the first one for years - never troubled me whilst riding - but was painful if I spent the day on me feet.
The op to fix that was the old "open you up and fix it" - very painful afterwards.
More recently, had one on t'other side - op was keyhole and must easier/quicker to recover from.
Again, I rode with that one for some time without issue.
That was patched last April and I was riding pretty hard again in May...
Keyhole is the way to go if you can, IMHO
Wanted: Trek XO2 54cm
Running:- Orange AluO; Orange Gringo; Orange Evo2; Trek Madone 6.9 SSL; Trek 1500 SLR
In Progress:- Orange Elite; Trek Elite 9.8
Selling:- Orange Sub3; Orange O2
Sold :- Merlin Titanium; Specialized 99 FSR Elite; Orange Mr XC; MountainGoat WhiskeyTownRacer; Orange AluO