When you say "I don't want to complain, but...."
When you say "I don't want to complain, but..." we assume you're about to complain.
You love to complain. You love to make sure you are heard on the issue at hand. All of us, on some level, enjoy complaining. The hope is our complaints are on worthwhile things.
Let us no longer give the precursor of not wanting to complain when we cannot wait to complain.