I shall strike a blow for the use of teabags and mugs here!
They are very useful, quick and easy, and if you use china mugs rather than pottery types, they retain the heat well.
I once heard a tea taster on radio four say that making a cuppa in a china mug, and leaving it to brew for approx 2 mins then squeezing the teabag on the side of the mug with a teaspoon before taking it out is almost as good as brewed tea in a teapot, and avoids the ‘stewed’ tea taste that using a teapot often brings.
I only drink Earl Grey tea, and now and then do use a loose leaf tea bought from a shop in Broadway, which being more expensive I do use a small teapot, but that’s only a couple of times a week usually.