This is a Bitcoin/Cryptocurrency forum man, so all of the response will be in favour of crypto, haha.
Investing in crypto is undeniably worth it, short term or long term investment Cryptocurrency will be the king of it. Just see the market fluctuations that what traders want good ups and dumps, regular trading or marginal trading as long as you know what you are doing you will get an instant and quick profit. Don't you know how to trade? Just go for long term investment, and I am sure that it will pay you well here in crypto.
I think you missed the point OP wants to convey and discuss. Rather than discussing whether cryptocurrencies worth investing or not, he is pointing out the idea of systematic investment. Most of the crypto traders are naïve and choose the time and amount of investment arbitrarily. But that's wrong. Best out of best investments fail if not invested on right time. Reading market is equally important in case of cryptocurrencies as any other investment.
Several people made investment in XRP and TRX trusting the word of mouth few years ago and today their folio is down by 80-90%.
By the way, this thread is more appropriate in Trading Discussion section IMO.