True in a sense, But why must we have limits if we have never reached them. theoretically speaking isn't there always room for improvement regardless of the subject?

Yes we are limited, but being limited has never stopped mankind from progressing.

Why choose that mentality when we have found ways to innovatively come up with solutions to prior problems in the past?

Why do we think of limitless as a godly trait? Mankind continues to do the unthinkable as we progress. We have done things we once thought were never achievable.