I won't go as far as to say you will REGRET not traveling...

Life is all about choices. If you choose not to take the trip, and instead stay with the job, that still opens up a set of fun and exciting experiences for you. You'll have money in your pocket, be able to date lots of women, take them on trips, get yourself some material things you might desire, go house-hunting... These are all fun, interesting things to do, so even if you don't decide to take the trip, that doesn't mean you made a bad decision.

You really have to decide what YOU want to do. Some people would rather get on with "real life" and go into the workforce, and get started with the things I mentioned above. Others want the sense of freedom that comes along with not being tied down, and want to delay the onset of "real life" for a little while longer.

Be grateful you have a choice. Neither choice is right or wrong.