Kundali Bhagya & kum Kum bhagya

I am wondering how any of these showed gained popularity. I came back after so long thinking everything is finally exposed but reading from titles on this page, Sherlyn is still pregnant!!! Just like the Tanu (I think) was pregnant for god knows how long in KKB. Both stories went no where but remain so popular till this day. I just dont get it 

That is the key to success. If the stories go no where then the fans also go no where but stick around.