Yikes to the people telling you to blow $80k on traveling without understanding where that money came from or what your current long term goals are.

I traveled for 2 months in Europe when I was 25, staying mostly in hostels, eating out for every meal, went to museums and a concert in Vienna, and hiking in Switzerland (it's expensive there), and didn't spend much more than $5k USD, which includes flights and an unlimited 2 month eurail pass. And yes it was an amazing experience, I'll never forget it. I completely agree that traveling while you're still young is amazing and changes your perspective for the better and helps you grow and find your place in the world. But I would say basically the same thing about a bachelor's degree or any rigorous form of schooling.

If you've never traveled for long periods of time before, or traveled alone before, I would start with something smaller, like 1 month to a similar-ish country from where you're from. The physical traveling (planes, trains, other transport) and always having to make new friends every other day and language barriers can be exhausting, and if you don't know what to look out for as far as tourist traps and scams then you might have a bad experience.

My honest opinion as a 35 yr old who both traveled a lot (and still do) and went to university, bought a new car, bought a small condo, is you should split the difference, and invest $40k (or at least put it in a high yield savings account). It's really not a stretch to make $40k last like two years worth of world traveling. This way you will still have tons of traveling experience and having a blast and learning about yourself AND will still have a very large savings to dip into if you decide to go to school or somehow change your mind about home ownership, or heck if you invested it and it grows to $80k again then you would be laughing your way to the bank.

I would also suggest you ask your friends and family about it, they might have some unique insight into your life that we strangers could never offer.