Of course. What makes you think that altcoins will never come back again? I believe altcoins are going to be bigger and better very soon. We just need to be patient and hope the best for the altcoins.
Well, wait another 2 years and altcoin will return to current prices. I cut the entire altcoin and focused on BTC only
Its safer to invest in bitcoin now but if you buy altcoins now that they are at the biggest lose level you will make bigger gains if they return to their normal price, to me it looks like altcoins have better chance to bring better gains in near future if you select them wisely