Japanese people often have ramen as the last dish in izakaya.Ramen inizakaya is a little bit different from it is for lunch.
In izakaya, we usually share a bowl of ramen with several people. It is not the rule in izakaya to have a bowl of ramen all to oneself. On the other hand, Japanese people sometimes go to ramen shop together after drinking at izakaya.
In that case, you can eat a bowl of ramen all to yourself. Ramen sharing is peculiar to izakaya. Though some foreigners may hesitate at the first time, I recommend you to experience the ramen sharing just once.