Weird! I moved from San Francisco to Irvine 3 years ago.
I don’t think Irvine is a horrible place to live. My thoughts echo @zenvelo.‘s The main problem is the lack of night life—not a single bar in the city limits, and don’t try going to a restaurant after 9pm. Not to mention that almost every restaurant is a chain. There is probably not a single restaurant in Irvine proper that I would be able to strongly recommend. Lots in the surrounding areas, though.
There is also a relative lack of diversity, culturally and politically—OC is a bizarre enclave of conservativism along the coast.
And the traffic. Yikes.
There are a lot of nice things about living here, though. The beach and weather would be my top 2 picks as well.
The lack of things to do didn’t start to grate on me until about 2 years in. I started spending Sundays in LA, which helped, and will probably be moving to Huntington Beach soon.