i think because it's nice to see someone achieve so much at 90. So many people have lost so much by that age. I worked at a nursing home for a long time and did an activity group with alzheimers patients every night. Many of my patients were his age and they had already entered stage 3 (which is basically catatonic). So seeing a 90 year old guy winning the nobel prize is pretty cool. he's so happy and with it!
also i love his sweatpants.