I agree with you to a certain extent, but Murli did help Rupesh when he lost everything and helped him set up buisness again, he didnt even consult with Bharati on the matter and did it on his own will...yes it was wrong of him to chuck it back in Rupesh's face about helping him as it was his own choice and no one forced him to do it.
I dont think Murli is a bad person yes he has done and said alot of things he shouldnt have and i dont agree with half of it but if you look at what his family went through at the prison and his fathers health being in a bad state i think any decent person would snap and would go to any lengths which is what Murli has done
As for him marying Bharati i think he was kind of backed into a corner with Veena's wedding and most of it was because of Mridala making Prakash ask for alot of dahej which made Murli marry Bharati and yes it was for money not for a personal gain but to get his sister married. Even when Rupesh was offering them all sort he always said no and was hesitant to take it, it was Mridala that always found ways to snatch everything of Rupesh.
He had a good wife in Bharati and im sure he will live to regret the decsions he made especially the one about not knowing she was a dwarf...what makes me so angry is that Mridala have done alot worser things to the family but yet they are still there and no one thinks of kicking them out