No you are not alone. We pick up stuff all the time for ours girls. My daughter sometimes comments that we should not waste money on something and then she picks it something she wants and says we should get it for the girls.
I pick up stuff for the furgirls and my real baby girl too. All of them are spoiled. My poor son does not have a chance but he was the only one for many years . Besides he's an adult now (ha ha).