Only he can tell you if it will be his last big hurrah.
The Swiss faces 28-year-old Marin Cilic knowing that, at 36 next birthday, it doesn’t matter how much the fans here love him, old Father Time is definitely not on his side anymore.
Despite breezing his way into the final without dropping a single set, the immaculate Federer admitted that he will soon have to think seriously about where he goes from here.
“Health has definitely a role to play in my decision-making,” he said. “As I move forward now I will have to be very cautious about how much I will play, and how much I think is healthy.”
With more than £300million in the bank he doesn’t have to worry about making ends meet. But there’s more to him than that. Being a tennis icon comes with responsibilities to both family and those fans.
Roger Federer admits he has to listen to his body more now
As I move forward now I will have to be very cautious about how much I will play, and how much I think is healthy
Fourteen years after winning his first Grand Slam title at Wimbledon, Federer is on the verge of history as the oldest male player to triumph there.
“It’s a big deal for me to make history here,” he continued. “I love this tournament. All my dreams have come true here as a player. To have another chance to go for number eight and be so close is a great feeling.”
It would, he admitted, be the icing on the cake after winning 26 Masters, a 2008 Olympic doubles gold medal with pal Stan Wawrinka and a Davis Cup victory for Switzerland in 2014.
And if he hadn’t been up against the likes of our man Murray, Rafael Nadal and Novak Djokovic, he would probably have won lots more. Even so, Federer revealed he still has serious nerves before a big match – and this year's final will be no different.
“Sometimes it slows down your legs, your pulse starts racing. That can stress you out a tad,” he said.
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“I always say I’m happy. I feel that way because it means I care.
“It’s not like going through the motions, like careless. That would be horrible.”
No matter what happens today Federer insists he has not set a date for retiring.
He said: “It’s just discussions I always have with my wife about the family, about my kids, is everybody happy on tour, are we happy to pack up and go on tour for five, six, seven weeks? Are we willing to do that? “For the time being it seems like no problem, which is wonderful. But we’ll see.”
None of that applies just yet to Cilic, even though he has won only one of seven matches against Federer. The big Croatian said: "This is just another step for me.
Roger Federer can create history by becoming the oldest male player to win Wimbledon
“I believe in my own ability and I am ready for this final.
“It sounds unbelievable that I’m a Wimbledon finalist. Especially the way this tournament has unfolded.
“But from the first round I played really great tennis and Friday was a really hard-fought battle. Sam (Querrey) played really high-level tennis, especially that first set. He was serving big and hitting big from the back of the court.
“But I’m very positive on the court and that’s extremely important.
“The way I’m playing, emotions are helping me and my team are supporting me. We have worked a lot on this.”