Yes because the price sky rockets from time to time.
Yes its okay to hold it but we know that no one can tell if bitcoin going up or down. Much better to invest the half in another investment to mske income while waiting the bitcoin price up.
Holding is only good for save some money because with holding you ca'nt earn money with it and that is bad so you have also to take some risks if you want to make profit in future, It is nice to hold it around this time because the value is not high enough to sell it and It will become a stable price soon with high value.