No, I wouldn't buy an AR with a fixed carry handle - even if I was never going to use optics.
For one, with a flattop, I can choose from probably close to 100 different sets of iron sights for the AR. You want M1A National Match sights on your AR? They make those. Want an HK drum sight on your AR? They make those. Want an elevation adjustable folding sight? They make those.
Two, I have an A2 upper receiver I bought in 1998 before I was sold on the idea of flattops. The reason I still have it is because, short of just giving it away, I can't get rid of it.
So, even if you never use optics, the flattop offers more versatility and better resale potential. If you do decide you want to use optics, then the flattop just absolutely crushes the carry handle.
About the only place I like the carry handle better is for niche applications (like a compact ACOG in a carry handle); but since they make detachable carry handles, you can do that with a flattop as well.