I think the main reason of altcoins is to suppress Bitcoin, because every month people are developing token with different names, so believing that Bitcoin now have another opponent of different kinds but from different sub group, so with only that alone is known that Bitcoin have Challenger's because of plenty altcoins
I don’t think just because of Bitcoin, most probably new tokens are here to replicate other project and either to scam people here or to really compete with those altcoins, that’s the only purpose they came here in cryptomarket. We should be able to see their difference and invest only with the good projects.