Nice! Set up all the features and tune them to your liking, you'll likely find it addictive. Just the notifications alone make it a very near Must Have for me. Responding to texts pushed it over the top, especially after customized a few responses.
Everything else was/is just gravy. Or Frosting. Something that I didn't expect to be very useful is the ability to make and answer phone calls. It has happened enough that I get a call and am away from my phone. I can do a quick 'Hold on...' and not miss a call. Or realize there's no rush and just ignore it for the moment.
Notifications from certain apps make it very handy. And Maps! When using Maps, the Watch gives you a Taptic response just before each new instruction even if you're using the phone too. And if you're on walkabout, you don't need to pull your phone out to get the next direction,
Let us know if you keep it or return it. If the latter, it would be interesting to know why it didn't work out for you.