This two are plating two different leagues please. Bitcoin is solely on its own it shouldn't be compared to altcoins. Bitcoin is a gateway to all altcoins.
That is right, they are different in many ways and for me I prefer bitcoin over altcoins, although I am also investing in altcoins, but when it comes to security it is still bitcoin that is better more than anything else.
Bitcoin is a safe choice for the time being, but it still has a huge probability of dropping out at the moment. So if you are a long-term investor they will choose to distribute them in a reasonable amount of investment