To make long story short, the main motivation to invest in altcoins is a potential fast abnormal return. All other explanations are just rephrase of that one.

Altcoins are more profitable than bitcoin because of their lower market value and only few people can manipulate them in the market. While there are people holding bitcoins for long term investment, there are these practical and knowledgeable people who are playing the market with altcoins. The more altcoins you buy the more chances of you getting huge money in the future if you carefully choose the best possible to rise altcoins. So by this time you must decide what fits you weather long term holding by bitcoin or daily trading by altcoins.

Firstly, when investing in cryptocurrencies, you can remain incognito. Secondly, it is one of the most profitable industries to date. And thirdly, I really like the idea of new developments.

Because altcoin can fluctuate to x10000% profits ore more,if you have picked long term coins you should have atleast x1000% or more because these long term altcoins has most of the gains in the market while those coin in the coinmarketcap has less movements which is why we should be investing to altcoins to get more bitcoins in the future.

You can't compare of bitcoin’s and even altcoins’ growth with real estate or the stock market. especially you can start investing in altcoins at least from $ 50, but you need at least it is $ 10,000, or more precisely 100,000 to invest in real estate or the stock market. And all assets have risks of loss.

Altcoins are becoming the talk of the day and the world markets are getting more concerned about it,I will never want to be last loss such opportunity because it the new future currency with great profit.

Because I am earning more money here with little amount of fees than stock market and real estate. I know that risks are high but I can gain more than my salary if I got lucky in my tradings.

it is pure investment without taxes

they say that cryptocurrencies is a great alternative source of investment and that is the one good reason why people should invest in altcoin, altcoin has a potential to have a good value and ofcourse you should look into the purpose of that coin before you invest.