Irresponsible Parents

my hubbys oldest girl is 24 now but when she was 7 he & his first wife divorced he paid every bit of child support til she was 18 thing is on one of his visit weekends we went to get her & they had split up & gone to another state my husband went to court over this until he was bout to lose his job so he just finally gave up next time he saw her she was 12 & then 21 a few christmases ago they went thru child advocate & all that time even though he didnt see her he paid which they automatically took it out anyway so i dunno if left up to him if he would have or not. well they did try to get him to sign over custody cuz his ex got remarried & he was like NO! but things have a way of mending themselves cuz theyre slowly getting a relationship its just messed up he missed her childhood actually over those years he got raises but child support stayed the same i dunno what goes thru peoples heads his ex never pressed getting more with the raises maybe cuz she didnt want to deal with visitation i think all that time it was based on $10 an hr & $15 an hr is what he made when she turned 18. its just all sad that kids have to suffer when its all said & done