Both
That's correct. Don't put all your eggs in one basket. Diversify into altcoins too because a lot of them are also generating huge profits! IMO, the privacy coins are the way to go. Compare their prices over the past couple years. ZCASH, MONERO, DASH and now DeepOnion which is a bargain right now!
It is true that a very profitable investment today is bitcoin and we can get profit up to hundreds of percent in a month, but dividing for gold is wise because gold is the world's largest and safest investment.