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
In general, with the development of blockchain technology and growing interest in it, every new project should have been an upgraded version of an existing one to get investors interested. As there are many altcoins that have improved some of BTC's disadvantages, for example.