Advice needed!!!

Nathan has been begging me for over a year to read the book "Diary of a Wimpy Kid" by Jeff Kinney. When he first brought it home from the school library, well, I just didn't like the title at all! So, I sat down and read the entire book. I hated it!! For some reason, it just rubbed me the wrong way. I asked Nathan not read it because I thought some of the language and content wasn't appropriate for him. I also told him that there are tons and tons of really good books out there that are much better for him to read. He seemed ok with...then.
Now, it seems, the books have become ever popular again in his class and he has asked me every day this week if he could "pleeeeeeeeeez read it".

I just don't know what to do. My gut says there are way too many other books out there for him to read and that we shouldn't waste our time on such a silly book. On the other hand, I absolutely LOVED the Junie B. Jones books and we read every single one of those. Some say those are just as bad as the "Wimpy Kid" series.

I am truly at a loss folks. If any of you have any advice on how I could handle this...I'd appreciate it. I searched on the internet and found an interview that Catholic Online did with Jeff Kinney. The article seemed to be promoting the book. On the other hand.....Catholic Online tends to be extremely liberal anyway. Soooo, I'm back to not knowing what to do.

Help!