I guess one would despise meaninglessness because it doesn't leave you with anything to do. Why bother ?
Here's where I think we both made an error (in the nihilistic perspective, that is). The idea that life is meaningless is more associated with the idea that objectivity cannot not exist (objectively). Therefore, how could meaning objectively exist (in a nihilistic perspective)? A nihilist would argue that meaning is entirely subjective and that people create and apply meaning according to their own perspectives (you know... "existence precedes essence").
Does that make any sense?