Haha, oh, yes, the thread where we got green-tinted glasses.
As for why Ohio schedules an FCS school the answer is that it accomplishes three things:
1. It can be helpful sometime to have a game in the season where the starters can rest and heal, if needed, and where the reserves who rarely play can get the reward of playing time.
2. Since it will normally be a win, it helps build a tradition of winning, and helps build bowl eligibility, both of which are long term positives for the program.
3. Without an FCS school on the schedule you could not have 6 home games a year. Since the budget requires Ohio to play some "money games", which are one-and-done games on the road where you get a big paycheck, you have no offsetting home game to get you to 6 home games. The FCS is the matching home game. Thus, this year the Peay game was a match for the Louisville game. Having 6 home games is useful several ways - it helps keep the players fresh, not being on the road all the time. It makes winning more likely. Also, since home games mean profit for local businesses, more home games is a good thing for building relationships with the local community.