Don't feel any guilt for taking profit especially if you are thinking about to gain more. Since there's nothing to worry about those things since what's more important is you already secure your bag.
You need to know that to many greedy people lose their profits and capital so whatever comes in your hand then be grateful with it since there's nothing gives us guarantee even if the altcoin season came. So you better always take your profit no matter what happen since we would never get any chance to do it if the market is starting to decline. Its frustrating to bag hold those alts that's why be contended on what gains you already got.
In fact the more BTC rises to 100k, fear arises among short-term traders, how could it not be, just a little BTC correction, their altcoins quickly fluctuate down especially along with the Christmas and New Year moments. Yes, the market is quite unpleasant to see and only strong coins are unable to survive the BTC correction let alone the usual altcoins and their holders must be prepared for all the worst conditions.