Agree completely.
I think it's reasonably likely the division is still up-for-grabs going into that last series, but both teams have playoff berths sewn up. In that scenario, I would be more concerned with setting my rotation than winning homefield advantage.
For me, the bottom line is the season is going to come down to a three-game series. I mean, it might be a three-game series against the Marlins (half-blue), but it will be a three-game series where the Brewers need to win 2 of 3.
Depending on the scenario, I'd almost rather be on the road, especially if we end up playing the Cubs. And I'd rather play Chicago/Cincy/Philly than Arizona in round one. I'm terrified of the D-Backs when they throw out their good pitchers.
My optimistic take is this: One of the Cubs/Dbacks are going to take on losses over the next 4 days. If the Brewers can play well in NY, they'll be very close to clinching a playoff spot. At that point, you really just have to take care of business against the Marlins. And making the playoffs has really been my goal all season long. Winning the division would be a nice bonus and a bit of a comfort should we drop that first-round series, but being there matters more than anything, especially with the pitching (starters and bullpen) we can throw out in a short series.