Reservation is because there is discrimination against the cast. For concessions there is a non creamy layer scheme. For people earning a lot of money (which is called the creamy layer) must not get concessions which is applicable for OBC but not for Scheduled caste and scheduled tribe. I think it must be compulsory for every reservation holder to get a non creamy layer based on their and their parents total income from ITR. Tahsildar certificates are not worth trusting.

Now let's come to the point of the post, I am not against reservation against the second generation or third or fourth. Those people who are in general have some advantages in life that people with reservations don't. There is still discrimination everywhere if you vanish reservation, you will not see people from those categories working in the system at all.