What is your objective? What is your altimate goal?

A person will alway go faster on a road bike (always) than a hybrid.

Are you training to race? Road bike
Are you riding for exercise? does not matter
Are you riding with family? hybrid
Or do you just want to go fast? road bike

I average about 16 mph on my road bike.
I average about 14 on hybrid
I average about 12 on mtb with my kids in a trailer.

However, they are all fun for different reasons.

Here is an idea, get both.