Eileen Davidson on Housewives

I have to ask why ED and Lisa Rinna joined Housewives of Bev. Hills? For Eileen it sure seems like she's got a full plate with all her soap duties. Why would she want to sink to the level of this slop? The few times I've tuned in it looked like "slumming" to me with such pettiness and a totally crass, crude and unlikeable character of Brandi, only known for losing her hubby to Leann Rimes.
Why would anyone subject themselves to this embarrassment? It's not like they don't know where their next meal is coming from.