It may sound selfish to some, but to caregivers who dove into caregiving with full hearts and no planning, then ended up sustaining this life-altering mode for months and often years, it's a perfectly rational question. People put their lives, as they are living them, on hold in order to care for others. That's good. But when "hold" becomes the new norm, there's a mental adjustment to go through. And sometimes that includes dealing with resentment.