It’s important for your SEO and for your site visitors that may bookmark your individual pages to use unique and content relevant titles and descriptions in your meta tags for each subpage you have.
If you have a small site this is a quick thing, even with a larger site of 1000 or pages it’s still important – and you may want to research tools that can automate this process for you.
The page title is a very important SEO factor. Think about it, when you search for something, the top 10 results almost always show your search term in some shape or form within the title tag.
Of course, this is just one small part of your total SEO plan.