Don't be a K'fui Tova!
I lost a testicle to Seminoma. I had been trying to crack the bad habit of hz"l, but not hard enough.
So Hashem did me a favor and sent me a clear message.
Baruch Hashem, I got the point and be'ezrat Hashem I will live my life out b'kedusha.
It is definitely better to pay in this world than in the next, and now I got to do teshuvah as well.
To all out there. Appreciate your health and don't be a k'fui tova.
Hashem gave you all your organs. Don't use them for anything other than mitzvot!