I fixed one too many data corruptions to do away with FKs. If we are large enough that FKs are causing performance issues, then we are large enough to invest i

I fixed one too many data corruptions to do away with FKs. If we are large enough that FKs are causing performance issues, then we are large enough to invest in and deploy another performance boosting solution while still protecting the integrity of our database from contractors/employees running around with direct SQL access (another nightmare unto itself, but one that I as a developer have less control over than if there are FKs or not).