Is a gravel bike worth it for mostly tarmac riding?

What you actually get at this price

Frame: aluminium or steel frames are common, prioritising comfort and durability over light weight
Tyres: wider tyres (typically 35–45mm) that roll well on roads but handle gravel and broken surfaces confidently
Brakes: disc brakes as standard, usually mechanical or entry-level hydraulic
Gearing: wide-range gearing for climbs and rough terrain, often lower than a road bike
Extras: mounting points for mudguards, racks and bikepacking bags are usually included

Slower road feel: wide tyres and relaxed geometry dull acceleration on smooth tarmac
Extra weight: gravel frames and wheels are often heavier than road-focused alternatives
Drop bars learning curve: not everyone finds them comfortable or intuitive at first
Overbuying capability: paying for off-road features that rarely get used
Tyre choice matters: aggressive tread can add noise and drag on roads

Note