know/see where someone is coming from idiom
明白／知道（某人）为什么会那样想
If you say to someone you know or see where they are coming from, you mean you understand why that person has a particular opinion, often although you do not have that opinion.
I would've taken the dog to the vet, but I could see where they were coming from. 是我的话，我会把狗送去看兽医，但是我也明白他们为什么会那么想。