Added to my journal.

One-handed swords have a higher attack speed, allowing you to strike enemies with an endless series of blows, preventing them from retaliating.

Low damage, small attack angle, and radius. If surrounded by a dense group, you won't be able to interrupt all of their attacks (but with a two-handed sword, it's easy).
Although in a duel, it might be fun: you grab them and start hitting...

Nothing is needed except a blacksmith. That's how it is.

I find the ability to locate hidden things very useful: secret doors, traps... It's helpful.