No I wouldn't, my two main reasons are:
- The overall size and weight of a FF system is considerably more than APS-C. I already find size and weight an issue, that's why I chose Pentax, even a quality (Oly) 4/3 rds DSLR system is heavier!
- The cost is curretly much higher for a "like for like" system and likely to stay that way.
There are other personal shooting style reasons that mean I don't "need" a FF system, such as better high ISO performance as I've never needed much above ISO 800, most of my phoography is at ISO 100 and 200 and that includes hand held night shots.
I also, quite strongly, have the belief that most (not all) of FF devotees only want it for bragging rights!