Oh, I love Portland. I love visiting that city and it is a place where I would love to stay for an extended period, say a few weeks or even months.
I have found people to be quite friendly, and I love the cycling culture. I also love the microbrewsalthough my favourite is from Bend (Deschutes - but they have a nice pub in the Pearl now...). Nice spots for running, too, and it's true that Forest Park is gorgeous.
I've spent only a few days there so far (perhaps a week total) and I felt just like home (in Vancouver, BC). If you are used to a place like, say, Florida, it might not be your thing. But coming from the East originally I love the PNW climate: no scorching heat in the summer, lots of green, and generally only gentle rain, only rare storms, which I find provide sort of a laid-back climate. (And great backdrop for a beer at the pub with a few friends.... of course!) No hard colds in the winter, but if you want to go skiing it's not too far away.
And there is Powell's, possibly the world's biggest independent bookstore. Need I say more?