Should we give the right to vote to 18-year-old people?

I think that they should have the right to vote because of the reasons below:
First,I  think that we should think about our own country's political problems as early as we can. If we give the right to those young people, they will think a lot about those problems. Second, I think that 18-year-old people have enough knowledge to think about these. So, it is O.K to give them the right to vote.
That's all . Thank you for reading my opinion.

Akira