I'd like to have more diversified porfolio, that includes BTC (not less than 80%), ETH, LTC, ADA, QTUM. Can't say why exactly but there are a lot of reasons because BTC could have the best performance during the next bull market.
I don't have big portfolio but majority of my holding is now BTC ( approx 30%) then Eth, Neo,Eos, ADA and some shitcoins from shitty ICO to name a few Atonomi, Open platform ( Fomo effect)