SAN FRANCISCO — Like other gay men in their golden years, Jack Norris and Seymour Sirota had heard the horror stories. An elderly lesbian couple is housed on separate floors of a nursing home and kept from seeing each other. A gay retired college professor feels compelled to keep his sexual orientation a secret after his roommate at an assisted living facility asks to be transferred. "I thought, 'We are not going to be in that situation,'" the 67-year-old Norris says crisply. "This is not going to happen to us in our final days." That's how the two New Yorkers,...