I'm sure they'll grow to love it. Jamie was unsure about his tree at first, but now has his daily siesta in it, and uses it to sharpen his claws. It's definitely a worthwhile investment.
Thanks everyone and tell Saba to come over. Megan took her green mouse with her to the top perch and then when the mouse fell over the side she dove off the top level. That would have been fine except George was in her landing spot. He moved at the last minute but it was really close
I like cat trees too. My Jewel has 5 floors cat tree with balcony and house, she likes to sit at the balcony and looking at the window. She does not want to sleep at sofa, cat tree is good idea.