Sure and ruling them out is a very reasonable thing to do, if you don't need them. No reason to adopt gratuitously incompatible features. I've needed to move

Sure and ruling them out is a very reasonable thing to do, if you don't need them. No reason to adopt gratuitously incompatible features. I've needed to move databases between Oracle and Postgres quite a number of times, and I can promise you it wasn't part of the initial "requirements".