So over the course of three days he had a trial which doesn't seem to have bothered him much. He got whipped OK that would have been agony and then put on a torture stake/ cross/ whatever yes that would have been hell. But he was on it for a day and the whole thing lasted for three days. During the whole time he knew that it was for a noble cause (apparently) and that he would be resurrected once he died. He also knew his reward would be to rule over the universe too.
Now compare that to someone who spends years with cancer, getting weaker and weaker with the pain getting worse and worse, with their body packing up and living with the indignity of it all. Knowing all the while that once their dead no one will give them a second shot at life.
Does it really compare?