Debates like this just end up full of "no one uses their gardens", "everyone wants a garden", with neither side willing to understand that everyone's different. No, I do use my garden regularly, but have lived on my own without one too. I couldn't do without one. That said I'd find a detached house odd and too isolated, semi is fine, terraced probably better. Properly proportioned terraces intertwined with bright, open, friendily lain out apartments should be the future, with country developments limited to clustered villages rather than sprawling detached houses.
Now garages are usually a poor use of space that'd be better made into a room for people who don't use it to store vehicles or as a toolshed. Ours is still lader for one half and bike/tool place for the other, but even then it's not used to its full potential.