Test cricket is the real cricket for the players. In test cricket practice they judge a player's performance. Test match is basically a practice game. According to me, there are very few people who watch test match.
Test cricket not enjoyable cricket and nobody enjoy test cricket. We only see the players who are playing test cricket and test cricket changed his mindset.
I saw many big players who played test matches and after the test series,they could not perform well in ODI and T20 formats . ODI and T20 formats are totally different from Test cricket but many cricket boards select the same players for ODI, T20 and Test formats.
I saw Warner ,I know he is a big players but after playing the test series,he became tuk player and he dotted many balls in the ODI cricket. That was time but he changed his attitude by controling his mind but that is very tough for the players.Test cricket should be remove and that place,there should be more T20 World Cups and then there will be more enjoyment and there will be more opportunities for businessman to do the business.
You might be wrong first got the most fame in test cricket and was very popular. From the history it is known that Test playing was recognized since 1877. First there was Test format then ODI format and T20 format. When the ODI format was introduced in cricket, the popularity of the Test format decreased slightly as ODIs took less time than Tests. Again when T20 format was introduced in cricket, it became more popular than ODI. Nowadays we see T-Ten being launched again in various leagues which are shorter and more popular.
Test players are different in every country and players who play regular Test matches do not do well in ODI and T20 format. You said test cricket should be done away with, maybe test cricket will be there as long as ICC is there, currently test championships are organized to popularize test cricket. The competition starts with Test matches between different countries to play in this Test Championship.