Well, friend, while I respect your opinion of not seeing any other cryptocurrency living up to the original bitcoin protocol and being "shitcoins," I do believe that society can benefit from the development and implementation of alternative currencies due to measurable market demand.
Also, as much as we cherish bitcoin's cutting-edge encryption technology, which is delivered by cryptographic algorithms like SHA-256 proof-of-work consensus; there are various criticisms of bitcoin including scalability issues low transaction processing speed. These have opened up opportunities for innovation in alternative payment methods attractive over traditional financial systems with superior database/ledger designs different from Bitcoin. In my opinion though competition brings progress and these other cryptocurrencies constantly challenge us to improve on our Bitcoin network design.
Regardless of one's stance on this matter, it remains paramount that we are diligent in ensuring all new crypto technologies remain securely constructed during their development phase and operationally sound after release.