I have five at home - my own two riding horses plus my three school horses. All are turned out 24/7. It’s easy, though a tie. At a minimum they get fed (small amount of hardfeed, in tubs in the paddock) twice a day, covers on/off if needed, and the break fence shifted back. Takes me 30-45 minutes morning and night.
I don’t groom daily, nor do I pick poo. When they are done with a paddock I mow it (blitzes the manure and tops the small amount of dock/thistles).
I don’t have any help - though my blessed husband feeds them when I am occasionally away.
Eventually we will probably have kids and I have been thinking about what we will do. I am likely to sell my two big horses as they can be dodgy to handle on occasion, and are much harder on the pasture. The three school horses are pretty safe and I think I would be okay handling them while pregnant (I think I will try to keep teaching as long as I can).
If I boarded, I would probably only have one horse for myself because of cost, and perhaps the three schoolies if they could pay their own way.