I used to be able to, but these days no way would I manage both a starter and a pudding and sometimes I can’t even finish my main. I don’t have any dietary issues and I’m not watching my weight (although probably should be!) but I just can’t manage it anymore.
I tend to eat tapas more and more because then I don’t run the risk of wasting anything. But even if I am really hungry, I just can’t manage much more than one course, unless the starter is a salad or something similarly light. I’m 45.