It offers much better price/performance ratio if the seriously multi-threaded use scenarios matter for you (that is where you compete with Intel's seriously overpriced >$1000 chips).
It seems that in common use (web browsing, office, gaming), fewer but stronger cores still shine and even the fastest Ryzen is slower and more expensive than Intel's offering.
Well...for the time being. When the R5 and R3 get released in Q2, we will have 6 and 4 core versions with higher clock speeds so that might help a bit. Plus based on the pricing, I'm gonna bet a 4 core ryzen will be a bit cheaper than a 4 core kaby lake.
No it doesn't. Chips much slower than Ryzen aren't struggling with those common usecases at all. All you're doing is losing 8C/16T and spending the same amount or more to do it.
It seems that in common use (web browsing, office, gaming), fewer but stronger cores still shine and even the fastest Ryzen is slower and more expensive than Intel's offering.
So it really depends. A lot.