Tool That makes Transparency in selections act as if the Transparency does not exist

[TerrarianGamer12]

When you select something, and the background is transparent, and you selected a little bit of the background, when you copy, then paste it, then move it to a solid area, you still have the transparency in the selection and it makes it hard to do put something solid on top of something solid. Is there a tool, or a plugin to do this?

[BoltBait]

When pasting something that has transparency in it, always paste to a new layer.  That is, use Ctrl-Shift-V instead of Ctrl-V.