Which of Felix Unger's quirks in The Odd Couple (2015) is most endearing?

Felix Unger's Quirks
The Odd Couple (2015)
The Odd Couple
TV
Felix Unger's Quirks poll options
Felix Unger's Quirks
The Odd Couple (2015)
The Odd Couple
- His obsessive cleanliness
- His cooking obsession
- His love for opera
- His neurotic personality