My wife is a resident of NY and all of her income is from NY. I am a resident of GA and all of my income is from GA. If we are filing federal income tax married filing jointly, how do I file the state tax. I am using turbotax and its combining both NY and GA incomes for my GA tax return and will not let me change it to just my income which is the only income earned in GA?

1) Is this correct or is there something wrong with the software?
2) Do we have to show our combined income on each state taxe?
3) I have heard people say it is better to file married filing jointly but for our case I feel married filing separately makes more sense. Any recommendations?

Thanks for your time!