Congratulations on your purchase and for listening to my advice rather than those of the Keurig fanbois.
That isn't "cheating", more like "lipstick on a pig".
If you can't drink a coffee black, it's not worth drinking. If you found a freezer-burned steak hidden in the back of the freezer, marinating it in Worcestershire sauce before cooking and then covering it with Sriracha before eating won't make it edible. Same goes for coffee. Bad black coffee is bad coffee, making it a "double double" along with several tablespoons of hazelnut/chocolate/french vanilla/nutella/pumpkin spice syrups won't save it.
By design Keurig cannot properly brew coffee. The water temperature is not hot enough and the extraction time is not long enough. That's a recipe for disaster. The equivalent for tea drinkers would be briefly dunking a tea bag into a cup of hot tap water. No tea drinker who cares about the quality of his drink would ever do that (and adding sugar, syrups, milk, or silly tapioca balls won't save it)... so no coffee drinker who cares about quality should ever use a Keurig, since that's the same thing.
At home and at work I mostly brew using French presses. I recently bought a Nespresso Inissia which I use when I'm in a hurry and want my espresso shot fast, and I also use a moka pot and an ibrik, which are the slowest methods I use but do make strong coffee. You'll never see a Keurig in my house.
Oh yes, this video will blow away any arguments about Nespresso being expensive... the pods themselves are refillable!
I've been saving up my initial collection of pods and once they're finished I'll be refilling them with Lavazza espresso beans (on sale at Costco this week 1 kg bag for $11). Note that you need to be using the authentic Nespresso pods (the aluminum once), not the plastic knockoffs. There's a reason Nespresso pushes their "recycling" program - they don't want you to know you can do this!