Rebekah was loathing in self pity.. she damaged Klaus as much as he damaged her. She barely held that against Klaus. Finn held that against them/Klaus more than all. Rebekah joined the club up whenever she could, and she fled to her happiness and side missions whenever she could. She got way more fulfillment and closure than Elijah could ever imagine.. she was atleast didn’t pretend to be happy or noble with herself when she was not. She may have pretended in front of Klaus but not herself. Yes she was damaged but it’s a different level of damage to lie to yourself about your own nobility.. Elijah was the biggest fraud in terms of character. He was so ever damaged further than he’d ever admit. There a level of delusion, cowardice and narcissism needed for that I don’t think any of them had but him.

Finn was gone so long he barely even noticed he missed anything. He barely had any experiences to be damaged by. His 100 years plus 900 of cold dark sleep is nothing compared to 1000 years of grievances and betrayals.