Another thing that can be much easier while traveling if you have anxiety is dating. Like you said, there's the comfort in knowing that you'll never see any people there again if you so choose. But if there's also a language barrier, it removes any expectations of witty banter and flirtation that usually relies on familiarity with your local culture and social norms. And there's less pressure to be interesting -- just being a foreigner will often make you interesting to locals without even trying, at least a first.