Alt coins are not needed - they deflate Bitcoin.
The main problem with decentralisation is the amount of knob rots creating idiotic coins
Such arrogance...
Dogecoin has increased visibility for all cryptocurrencies by a huge amount. The great community around dogecoin serves as a great starting point for newbies who are too intimidated by the bitcoin community. Many dogecoin users then go on to own bitcoins as well. It's a mutually beneficial relationship.
there is no one to stop/punish them for they're disregard of Bitcoin.

disregard of Bitcoin? Is this some stupid joke? No one owes bitcoin or its community anything. Stop acting like a fucking primadonna and maybe people will respect you. People disregard bitcoin because there's nothing to regard. The sense of entitlement and arrogance of bitcoin and litecoin owners is what turns people off in the first place.