For me, altcoin has many advantages, one advantage is it gives to the individual money to sustain the basic needs, It also reduce the increasing number of unemployed in some countries, The people who work in bitcoin develops the ability to reason out, enhanced the English proficiency, that's the some advantage of altcoin
There are a lot of advantages like :
-->Low fees
-->Quick and easy payments
-->Easy access
-->Individual Control Over Earnings
-->Altcoins are cheap
-->Fast transactions
-->Universally-Accessible 24/7
-->Complete Anonymity & Protection of Personal Data
-->No third party
-->Highly secured
-->Various altcoins are present
-->Turning Mobile Payments into a Trend
There are many more advantages but listing all of them will take a long time . But don't just see the advantages , because there are many disadvantages too !! Because for every action, there is an equal and opposite reaction (Newton's third law)
Thank You!!