Let's think together and give opinions.
Bitcoin investment or Altcoins is speculation rather than investment?
Bitcoin imo is the only coin you really can invest in risk-wise.
The chance of Bitcoin to go down has decreased a lot over the last 3-4 years. Bitcoin imo will be relevant in the near, mid and far future.
Most altcoins however are just here for crazy speculation and gambling. They exist to either make you more BTC or to lose them. Depends on how good you are in trading.