Just lost out a bit on Monero myself...usually I'll keep a position in a coin for long term if its one I like and have a certain number to trade out since I do believe in some profit taking if something shoots up in this arena since who knows what the life of any of this stuff is...unfortunately...I sold off all my Monero thinking no way would go much higher...and definitely coming back down...it hasn't....lesson learned or for me re confirmed...keep a base amount just to hold...buy up some more to sell off if I think a coin is about to pop...but you are right...there's really no middle ground between trading and investing...its one or the other...