I know an older traveler (65+) who actually saves money when he's on tour, which is about five months per year. He has a good pension, sold his house, rents a room from a friend and only pays rent when he's there. His situation is unusual, but it works for him and he carefully set things up that way. I know another younger (50-ish) guy who's been on his bike for three years and only spends about US$5,000 per year. He's unusual too.
My extended tours have been for three to five months. I worked very hard and set up my career, lifestyle, and home situation to be able to do that. I lose work and clients when I go, and it takes a while to get busy again, but for me it's worth it.
No, I'm never bored on tour. Quite the opposite. When I'm in my comfortable home for more than few months, I get itchy feet. Everyone's different and has different reasons and ways to travel. Or not.