"If not now, when?" is what I asked myself after taking an early (on my 55th birthday) retirement, and wondered if I should back and finish my BA. Asked the same question about going to live in Copenhagen for 9 months, 2004-5 as a study abroad student. Answered myself, "why not?".
My house is big and I love meeting people from all over! And I love to travel too. My kids are on their own and airb&b seems just right for me.