Why invest in altcoin when you can invest in real estate, stock market?
Some people have small capital to start with so they invest in altcoin because its way cheaper than real estate. If you know how the digital currency market works, your investment in altcoin will get bigger as time goes by and you can invest in real estate soon. In my experience, I invested in BTC first then I save up profit to invest in real estate for another asset/passive income. I used digital currency market/trading to have enough capital to put my own business , it depends on how will you handle your investment.