It depends on what 'the old days' means. Screws are more expensive than nails and easier to emplace. That has been the advantage of nails for most people for a long time.
depends on the wood, nails, screws. but both are ok use
Screws should be used instead of nails when a stronger and more secure connection is needed, or when the material being fastened is prone to splitting.
Nails are typically used for quick and temporary fastening, while screws are better for stronger and more permanent connections. Use nails for simple and temporary projects, and screws for more durable and long-lasting applications.
One screws one nails use joints not screws and nails.
Nails are much better to use when putting up a wodden fence.
Fine woodworking is the use of no nails or screws.
can nails and screws be a solution?
You can use drywall nails or drywall screws. I prefer the screws.
use a magnet
For hanging mirrors, it is recommended to use mirror clips or specialized mirror hangers instead of nails. These are designed to securely hold the weight of the mirror and prevent damage. If nails must be used, choose heavy-duty picture hanging nails or screws that are appropriate for the weight of the mirror.
Any material containing iron or steel is subject to rusting when exposed to air or moisture. If you pull apart an old fence, you will always find rusted nails in the wood where moisture has rotted them. The modern way is to use galvanised nails or specially coated screws instead. In any hardware store you will see green and brown screws made for outdoor use.
Then you use another glue that doesn't need a glue gun.