Regarding programming, I would say my answer would be yes to all of your questions. I think all of those feelings and pleasures can exist simultaneously.

Though, I believe you are touching on a point that is common in Buddhism. Attachment leads to suffering. Many of us, myself included, are attached to the identity of being a programmer. I would by lying if I said I did not have bittersweet feelings about the future. But I try to always remind myself about the impermanence of everything in the universe. Even if LLMs never existed, there would be a day when I write my final line of code. The day may come sooner than I once imagined, but it was always destined.

I think it is important to be mindful of the present as well. I can still program currently. I was programming minutes before righting this comment. Thus, it is imperative that I spend some time relishing in the fact that I still am healthy and capable enough to program. I have not been replaced yet. I still feel an abundance of gratitude and satisfaction.