Not saying it would be easy but it's getting easier.
For much the same reason I've been able to largely split from pro sports. As I've gotten older, I've realized the silliness of being more invested in the success of a team than the players who play on that team. That's where my affection for pro sports waned and my love of college sports grew. The players, largely, were invested because they were there for the long haul. One thing college sports had over pro sports is the inextricable link of most players to a particular program. Steve Taneyhill was and always will be a Gamecock. George Rogers was and always will be a Gamecock. Peyton Manning was and always will be a Vol. Tim Tebow was and always will be a Gator. Herschel Walker was and always will be a Dawg. Throughout the history of the sport, players were identified with a single team.
That's obliterated now. Spencer Rattler, as much as I love him and he was 100% Gamecock when he was here, I can't look at in the same light as a Taneyhill. Kyle Kennard spent 12 games as a Gamecock. Was it a great 12 games? Absolutely. But I can't possibly look at him as an all-time Gamecock great when he literally passed through Columbia. Shoot, his farewell message mentioned another school. Players just come and go now so it's increasingly difficult to get too terribly invested.
One thing I loved about college sport was that we had our players and they had their players. You learned to hate the players on the opposing teams and knew you had 4 years to beat them. It was a hallmark of college sports. Peyton Manning came back to college for his final season, largely (maybe solely), because he wanted a final crack at beating Spurrier and the Gators. THAT is college football. And it'll never happen again.
Now the player you hate could very well end up on your own team and a player you love on your own team could end up playing for an opponent the next season. I just don't have the ability to delude myself into cheering for/against a player one season and then swapping it the next season. Yes, there were always transfers to some degree, but it was, comparably, exceedingly rare, and almost never did you hear of starters transferring to another program just because.
A poster above said you were always just cheering for the logo, irrespective of the players wearing the uniform. That's load of malarkey. When I was younger, I absolutely LOVED the Gamecock players. You would follow a guy from a true freshman all the way through his junior of senior season and the became indelibly linked to the program.
College football has always been about the link between players and the program. Once that's gone, whatever remains isn't college football.