In my opinion, a good persuasive speech topic would have to be... to read books. I feel that not many people, particularly the male population in our age group, read a lot of books. All they're interested in are bloody video games and whatnot. Books are educational as well as fun. While reading, you are expanding your vocabulary, being exposed to new styles of writing, and just fixing up your writing skills in general. Books don't have to be boring poop, you know. If you have trouble, just ask anyone around you to recommend a good series for you. That's how I find new books to read. Just because you haven't found the right book doesn't mean it's not out there. You just have to keep looking. Finally, reading is exciting. It can take you on exciting adventures. If you delve deep enough into the book, you can actually feel what the character is feeling. Excitement, fear, depression, or just plain neutral. You can even see what the character sees by imagining it in your head. All in all, read. It's a very good idea.