It’s fun to spell sugar as “suga” or “shuga.” But which way to go? Honestly, the only way to find out is to say it out loud with gusto.
Let’s try it now. Ready? One, two, three:
SHUGA SHUGA SHUGA!
Nice job! Now let’s say it the other way:
SUGA! SUGA! SUGA!
Analysis:
SHUGA SHUGA SHUGA has a sort of college rooting feel.
SUGA SUGA SUGA forces you to say it deeper, sounding like a tribal man.
I opt for the tribal man pronunciation. Which do you prefer?

I have honestly never thought about this. I guess I would agree with you, or I might write it as ‘sugah’ but… what a weird word altogether!