My friend said i was a self important jerk?

ok so one day, me and my friend were in line at the grocery store. we only had a few things and the person in front of us had 2 carts of crap and about 4 little whiney kids. this lady weighed about 300 pounds, and all her kids were smelly and probably adopted ,so that she could get money from the state to care for them. she kept on leaving the line to get things, and even started eating her food at the checkstand. so after about 5 minutes i asked her why she thought it was appropriate to buy soo much? she got snobby with me, and told me that she had kids to feed. first off, all she bought was tv dinners, and garbage. i told her that i have better things to do on my days off then to wait in line for some person buying junk. i told her that she needs to stop eating crap, and that she needs to leave her smelly kid at home. note : her kids were from mexico. go fig! i just dont understand these people they serve no purpose i swear! whats wrong with this world?