What I'm personally thinking about is never too late to invest in something you really believe. But you need precisely to understand the market and the coin or currency you are going to invest.

As Bitcoin was the first crypto, so it has good chances for long life. Its price is still not predictable in any reasonable way; however, you can look up to the historical data and compare the waves and pics.

From my observations - bitcoin is still highly volatility currency, but the period of making a profit become shorter(you need to track the market every day and understand resistance and supporting lines). Some media bombs also will influence the price and big players with futures are also pump and dump the price.

For not professional traders it's not so simple to make profits in daily/weekly basis.