I think guestrichardson gave the best advice.
House plants aren't intended to overwhelm the room they are in. They should stay proportional to their space for maximum positive effect. When they get too large they sometimes begin to distort (growing crooked), or get "leggy" (too more bare space on the stalk). When they get too large, it's better to start over again rather than chop them smaller.
If you can start "babies" from the mother plant, that can be a rewarding experience. Just think, you will have a second generation from your favorite plant.
The sad fact is, plants have a limited lifespan. They get to a point where they have "paid their dues", and it's time to move on. Plants aren't intended to live forever; they're supposed to carry on thru new generations.
If you cut it down and start new babies, you can still display a nice photo of the mother plant to show people. You can point to the babies, and then point to the picture, and say, "this is the mother plant." Then you will have a nice story to go with your plants.