"So, what's wrong with metacpan.org?"

(speaking for myself) It's not that I hate metacpan; it's that I don't like it.

It's not that I like search.cpan; it's that I love it.

Qualification of the above;
I find metacpan too messy, and busy for my needs, and likes -- it get's in my way, and workflow.

search.cpan OTOH has exactly what I need, and only what I need.

That pretty much covers it, for me. :-)