Is it morally wrong for me to think this?

So long story short, my grandpa died last year and my grandma moved in. I was really worried because I wasn’t sure how I would cope with her presence, and while admittedly I was being kind of a d*ck initially, I’ve more or less gotten used to her by now. But there’s still a few problems. But this is the thought I had in the question:

I feel like it might’ve been easier if the roles were reversed (if my grandma died and my grandpa moved in). Let me explain. I would never wish death on anyone, and of course my grandpa would be heartbroken, but to be brutally honest, I was always closer to him than to her. Both of them were in their 80s, and both were pretty out of touch with how things work these days, but somehow I feel my grandpa was a bit easier to deal with. And neither of them lived what you would call an exciting life, but you know how grandparents always tell you stories about their lives, sometimes multiple times without knowing it? Let’s just say his stories were slightly more interesting.

I can’t help but feel horrible saying this, but at least I’m being honest. I also really regret not being nice to my grandpa before he died (I wasn’t outwardly mean to him, but I was annoyed with both my grandparents these past few years. I guess I’m just an easily irritated person). You just can’t help who you like more compared to other prople, even in your own family, but of course it would be best if both were alive and happy, but sadly that’s not how things always work out.