If you buy a CX bike, you'll have a versatile bike that can handle anything from light singletrack to road centuries or light racing, and you'll have a bike that should retain a significant portion of its value should you decide to sell. Add a 2nd wheelset and you have a VERY versatile bike. Also, drop handlebars will be more comfortable on long rides. Lots of different hand positions to choose, so you're not stuck in one position for hour after hour the way you are on a flat handlebar.

If you buy a hybrid, you'll get a bike that can handle anything from light single track to light road, but definitely won't be suitable for longer road or for racing. You'll likely take a hit on resale value if you decide to sell it to upgrade in a year or two.

I wouldn't buy a hybrid unless you are 100% sure that's what you're going to still want to be riding in a couple of years.

FWIW, I bought a hybrid when I got back into cycling in early 2013. Took me about 6 months to realize that what I really wanted to do was ride on the road. Bought a road bike later that year and a CX bike in early 2014. Sold the hybrid for half what I paid last fall. The only thing it did better than my road and CX bikes was pick up groceries, and my 1985 Univega does that for teh cost of a few repairs.

YMMV, but I think CX with an extra wheelset is as close as most people can get to a universal bike unless they have a serious yen to spend lots of time riding singletrack.

BB