DEAR ABBY: I am struggling with whether I am obligated to organize a party for our 50th anniversary. I was the main caregiver for my wife until a year ago, when I physically could no longer do it and had to put her in a board and care facility. She has Alzheimer’s, is wheelchair-bound, and must be fed and changed. I still work during the day, but I help put her to bed at night. On the weekends, I wheel her to a park so she can get fresh air and watch kids on the playground. She perks up when she sees me, and I always feel good when I can get her to laugh about something her goofy husband tried…