What are the benefits of splitting your time? My friend does that but it seems like airfare 3 times a year, maintaining 2 cars, acquaintances you see every now and again, having two houses, and all the stuff in the houses would be a lot to handle.
For some, who live in a cold climate part of U.S. or Canada, splitting time allows one to have winters in the Phils and summers back in Canada, U.S., or wherever.
One reason my wife won't go back is she has taken to the climate here. She likes some cool weather. Of the Phils, she says "too hot all the time". But that's not universal. I lived with a Filipina gf in Vancouver for a few years and in winter we would fight over the thermostat. She'd keep sneaking it up to 80 degrees. Then we lived in LA for a few years. Even LA winters she found cold! She's been back in the Phils for years. Partly because of her career, but also because she likes the weather there. I adapted to it, but never really liked it year round. Here, I like to swing an axe and cut up five cords of wood for our winter fuel. I cut the wood in 40-degree weather in winter. I could simply not manage to spend hours wielding an 8-lb. maul, a 10-lb. sledge, driving wedges into the tough stuff, etc. in 80+ degree heat. Some must be capable of sustained, vigorous activity in such temperatures, but I am not made for it.
Our venerable leader Lee spent years living in Florida, with 4 months a year in a condo in Cebu, and seemed quite content with that arrangement.
One does not necessarily have to have 2 houses, 2 cars, etc. There are various possibilities, including a house shared with family in the Phils, 2 condos, renting at one or both ends, etc. If one's time in the Phils is spent in a large city, a car might not be an asset. When I lived in Quezon City full-time, we had a car and driver (actually, due to "color coding" we needed 2 cars). I never liked driving myself in Manila and coping with traffic, parking, etc. It was okay with a driver. I usually only drove my own car if leaving Manila for the province.