I don't think any series has less of a right to exist than any other. If sequels are being made, then people still enjoy it because it's still selling. It would therefor be unfair to declare a game someone enjoys shouldn't exist.
If you think certain series like Final Fantasy or Asscreed or whatever sucks now, and that the series should end because of it, Squeenix and Ubixoft would just move on to making other games with the same level of quality.
If you think certain series like Final Fantasy or Asscreed or whatever sucks now, and that the series should end because of it, Squeenix and Ubixoft would just move on to making other games with the same level of quality.