I agree, fixing and creating things is what we do. It makes us happier and better. Another demotivating argument one might hear often is that building X, learn

I agree, fixing and creating things is what we do. It makes us happier and better. Another demotivating argument one might hear often is that building X, learning Y or using Z has no business value because there already exists something that you could do/use. That argument makes sense if your primary concern is to solve a particular domain problem AKA you are a 'business person'. But a craftsman/engineer/designer etc. Your primary value comes from your skills and knowledge.