yeah photoshop is for users who develop professional quality material for print / film / television and games, as well as forensics and medicine. Ive seen it used to compare bullets and to isolate shapes in medical xrays.
if you dont use layers then your workflow wont be as easy to undo or change according to what you need.
as mentioned before you can flatten the layers.
but... add one layer and remove the background layer and work on that new layer and flatten whenever you aquire more layers due to pasting or rasterising.
if however you stick with layers you will find its a much easier way to manage objects in your composition and allow you to nudge elements around or apply effects and features to different layers accordingly.
you can also merge visible which will merge the visible layers together.
photoshop without layers is like a fire engine without a ladder and a fulltank of h20.
If no-one gives your an answer to a question you have asked, consider:- Is your question clear.- Did you ask nicely.- Are you showing any effort to solve the problem yourself