Yep, @1214mom after May 28, now SWA fliers have to pay for bags. And their seating policy is about to change too.
Delta Amex cardholders as well as all levels of Delta medallion status get free bags. Likely true for other airlines as well.
@fendrock - Don’t know if Delta is an option for you, but with cr card spending you also get both “mqd’s” towards medallion status and flying miles, and the higher medallion status you have the better the ratio of flying miles