Will I always teach PreK?

I really enjoy teaching pre-K. I feel that it is very important to students have an excellent first experience with school. I also know, without being conceited, that I am really good with the four-year-old students. I am good at bringing things down to their level and explaining it in a way that they will understand. However, sometimes I feel that I need to teach older kids. I have so many strategies and ideas in my head that I want to use, and I just can’t use a lot of them with my young students. It can be so frustrating to have so many ideas in my head and not be able to actually use them. I wonder how long I will teach pre-K. I know chances are that I will not always teach pre-K. I am slightly amused by the teachers that have taught nearly every grade level. I can’t help but think how frustrating and exciting it must be at the end of the year to know that you are changing grade levels. I have worked so hard to get my pre-K classroom just how I like it, and I would totally stress out if I had to think of another grade levels organization and standards.
Is it good for teachers to try different grade levels? Should a teacher change grade levels if she is happy where she is or just stay? There are so many thoughts to ponder when it comes to this situation.
Where will I be next year?
5 years from now?
There is no telling. The only thing I know is that I hope and pray that I still have the health, ability, and willingness to be an awesome teacher that has an impact on my students’ lives.