Running my Sierra 2's on full. Don't like hi pass????

I am setting up my new Parasound P5 pre and ATI 2000 amp with my Sierra 2's and Rythmik F12 Sub.. Had them both set on 80hz. I then turned down the main to the Sierra's to about 60hz to get a little fuller sound... Played it like this for a few days and tonight turned off the crossovers on the P5. Now both the Sierra's and the Rthmik are getting a full signal and the sound is way better. Much more full sounding to me.
Any harm on keeping the Sierra's on full range with this big amp? I have read in a few places that it's a lot better to run these on small since it's a book shelf.

No harm in doing so with the Sierra-2's, but it does point that in your room, you like extra bass.

Guess I really am a bass head.