We all have our dealbreakers. There are some things that are without compromise no matter how much you like (or love) a person. Variety is only the spice of life if the variations don't drive you crazy.
At the surface-level, I consider like and love to be temporary and shortsighted. Longevity and happiness are about compatibility beyond mere feelings. What made me like and love someone in my teens and 20s is different than what made me like and love someone in my 30s. Thank God.