That is on my bucket list to do Haleakala. Drove up to the top years ago but now that I am back on a bike it's a fool to go make the top by my own power. Sounds like with the sickness and everything else you may have subconsciously been defeated before you even started. You gave it a shot any way so my hat is off too you. I hope to get there before I get to Old and just thought how cool would that be to go climb it on my 50th. That's 5 years to get ready.
Did you ride any where else on Maui?