It is profitable but associated with high risk compared to holding for long period. Despite of having your own analysis and strategy when you trade sometimes unexpected things tend to happen that can lead to losses.

It might be easy as it seems but it requires knowledge and patience, plus you need to set aside your emotion because it is one of the problem why we are committing a mistakes.

Thus for a person who dont have time to monitor frequently the market, hodling is the best option to earn.