Nobody should ever mistake their hybrid for a MTN bike. Hybrids were not intended to go down mountain sides, over large roots, rocks, and crevices. For that type of activity, you need a genuine, bonafide, authentic, MTB.
A double suspension MTN bike would be even better going downhill.

You would never practice DH MTN biking with a simple hybrid!

Now country trails and small country hills with slight inclines are fine, provided that the trails are fairly clear of roots, rocks, and crevices. You particularly don't want an aluminum hybrid continually jarring up and down, on a daily basis.

Hybrids were made for City/Country road terrain changes. Road bikes just don't feel right on gravel and dirt roads. They feel so much better on paved roads. Hybrids usually feel good on either one. Of course, tire size has much to do with that fact, as well.

- Slim