There are a lot of stereotypes about young travellers. As the trope goes… your first trip will be a Europe jaunt, probably with Contiki, spending most of your time meeting people, staying in hostels, and shuffling around sticky pub floors. The joys of being 19.
Your second trip you take your time, do it yourself, go where the wind takes you. You trade Paris and Barcelona for Scottish highlands and obscure Romania, and your suitcase for a backpack. Rather than being ferried around by tour operators you make new friends in new cities and make last-minute decisions to follow them around.