Married filing separately results in less taxes

We have always filed jointly.  Normally we break even with taxes.  This year, we own nearly $7,000. I split our taxes to file separately and the joint taxes we owe was reduced by $2,000.  Both of us earn between 90k and 155k. It feels wrong to file separately, but the numbers are not lying.   Anyone else found this based on the new tax laws?

Our itemized deductions when joint was 23k so it selected the standard deductions. So filing separately, we both qualify for the standard deduction of 12k?