Heck Paul, that just sucks.....talking about hitting the PW, no spin and........
Seriously, I had heard of Marfans, but knew very little about it. Surprisingly 1 in 5000 people suffer, so is relatively common.
Whilst you listed potential effects, it sounds like strategies can be placed to prevent or reduce the risk of these occurring. So as Colin said, listen to what your doctor says and follow that advice.
In other words....stop being stubborn (typical Leo).
As Mark lyrically penned, we are on this planet for a short time, custodians for the next generation. What we contribute is up to us. On WGT you have contributed heaps, made us laugh and made your alt partners cry (when you say WTF, PW, I dinged in and it went.......) and I am sure you have done exactly the same in real life.
Personally I look forward to many many more years of you doing the same.
Attitude is the key, believe and back yourself 100% of the way, and half the battle is won.