Stopovers mean you are doubling your airport time as you have to do the whole immigration thing twice. Only worth it if you plan to spend a week or so at the stopover destination. You must be trying to fly the cheapest flights possible if it takes you two days to get back I never do connections with more then 4 hour waits. Need to factor in opportunity cost of wasting an extra day in airports and doing extra plane legs when going for those slightly cheaper tickets. Thats a day you miss being on holidays. Its not worth it.As I said it all depends on connection times, stop overs etc. Etihad is one that has weird times. We have done Sydney to London twice this year with them and it’s a full day to get there and just over 2 days to get back with their schedule and that’s without throwing in domestic legs to your home city if you are unlucky enough not to live in Sydney or Melbourne. A lot of people if flying economy try to break their trips off with a stop over at a hub aswell which adds time. For first time travellers or those who aren’t keen on flying I’d definitely recommend a stop over in either direction.