You have to do what's best for you! If you are a sociable and outgoing person, then you may find you get along well with your cousins, even after such a long time apart!
I too have cousins but all apart from one live in England these days, and I live in Scotland! I used to regularly meet up with my cousin who lives in Scotland. However, she has turned into an alcoholic and her 2 daughters are also bad news - one beats her up and trashes her house when she's drunk, and the other one is a heroin addict! My mother drank heavily all throughout my childhood, and my husband's father and brother both had serious issues with alcohol, so I have cut myself off from her! I am not a particularly sociable person, and I don't mind my own company, so it wasn't hard for me!
Best of luck with your cousins! ?