I prefer long term investment because working I don't have much time for make short profit so I try to buy convenient crypto currencies like now and just hold it.
Longterm investment is good and don't think a working people can't do a short term investment. most of the people will go regular job and parallelly they will do trading. to make short term profit you no need to spend full day whenever you will get time just check the market that's it. but you have to check regularly then only you can able to make a profit in short time.