Life is short. Always dance like you do when no-one is looking and put as much sugar in your coffee as you want. Sometimes try it without and sometimes with more just to make sure you were right.
I never use sugar in my coffee. For you who do; you should try the "Pineapple Thief" by the Swedish roastery Johan & Nyström - it is so so so sweet. The sweetest coffee I've ever tasted!
Sugar has an interesting characteristic. The more you use, the more you need. I discovered that unintentionally. After diabetes, I realized I'd have to cut down on my sugar consumption & I won't use artificial sweeteners. I read that you can increase your sensitivity to sugar (and salt) &, after a few weeks, need less & less. Since I have a terrible sweet tooth, I didn't really believe it but it's true. I used to put at least two - three teaspoons of sugar in my coffee. Now, I use 1/4 tsp. Any more than that & I taste only the sugar - not the coffee. Just for curiosity, I had friends over & I tasted a cup they made with my previous dose of sugar. It was so sweet, I almost gagged. Couldn't even swallow that sip; I had to spit it out.