Why does Walt continue to use Gale's coffee setup after?

After Walt kills Gale, he is shown using Gale's coffee maker several times. The obvious answer is that it's the best coffee he's ever tasted, but I can't help but feel like there's a thematic or narrative meaning behind it as it's a deliberate choice the writers made to depict him using it.

Could it be that Walt is reveling in the fact that he "won" over him? Or perhaps it's suggesting that Walt feels some modicum of remorse, so he's appreciating what Gale left behind? Or perhaps something totally different - I'm not sure.

I'm curious what other people's thoughts are.