(1) the appearance of the celestial sphere as viewed by earth-bound observers can be viewed as a useful tool in learning celestial motions but this doesn't necessarily imply a geocentric model of universe. After Tycho Brahe made his accurate measurements of Mars, etc., what geocentric model could accurately explain those?
Tycho himself had to do some weird hybrid theory and of course Kepler used his data to nail down the heliocentric theory in detail.
(2) other than the pure utility in (1) above, it is nonsensical today to have a geocentric view of the universe. There are so many disproofs of this that to believe so today is cartoonish.
