I have had no oven, just a combi microwave for the past two and bit years. Just me living here. Love this. Have used it to cook everything, including bread, pastry, cakes, meringues, quiche, etc. etc. As well as using it as a normal microwave.
The only part of it which is not all that good is the grill, so have a compact separate grill.
Am having a very expensive kitchen make-over being done, and have had a full size oven put into this, as kitchens are meant to have that. I have half an eye as to how that new kitchen will help to sell the flat when I die. Except for the grill, do not think I will use that oven very often. Indeed the combi/microwave will go in at eye level and the oven above that!! Will probably use it for some extra storage.