Having read all the comments, the executive summary seems to be:
One use for the old wiring is to use it as "pull strings" in order to replace it with RG-6 and Cat6. But if the old wire is stapled to the studs inside the wall, you won't be able to use it to pull new wires, or even get it out.
Cat6 makes dandy wire for phone connections. It'll even cary 4 separate lines in one Cat6. And an RJ-45 8-conductor jack, as used for network connections, can feed a phone. Or 4.
A plain old phone line might be required in the future for 1) emergency communication during a power outage (But if power to the house is out, a plain old phone line might be dead as well. Unless a bad guy cuts off power to just your house.) OR 2) an alarm system OR 3) a future buyer of the house. None of these reasons call for dedicated 2-wire phone jacks in every room, though...or any room, given that you can use Cat6 for phone.
With RG59 (or better, RG6), you can feed an antenna signal to a TV, or to multiple TV's via a splitter. Will you ever want to do that? You (or the next owner) might, if you want to add broadcast (terrestrial) news and sports to your list of options.
For now, you can install wire without terminations for future use, or you can install empty conduit (like smurf tube).
Summary summary: Use the old wire to pull new wires, or allow access to it to pull new wires later, or if it's stapled in place abandon it. But leave a coule of phone jacks in place.
One use for the old wiring is to use it as "pull strings" in order to replace it with RG-6 and Cat6. But if the old wire is stapled to the studs inside the wall, you won't be able to use it to pull new wires, or even get it out.
Cat6 makes dandy wire for phone connections. It'll even cary 4 separate lines in one Cat6. And an RJ-45 8-conductor jack, as used for network connections, can feed a phone. Or 4.
A plain old phone line might be required in the future for 1) emergency communication during a power outage (But if power to the house is out, a plain old phone line might be dead as well. Unless a bad guy cuts off power to just your house.) OR 2) an alarm system OR 3) a future buyer of the house. None of these reasons call for dedicated 2-wire phone jacks in every room, though...or any room, given that you can use Cat6 for phone.
With RG59 (or better, RG6), you can feed an antenna signal to a TV, or to multiple TV's via a splitter. Will you ever want to do that? You (or the next owner) might, if you want to add broadcast (terrestrial) news and sports to your list of options.
For now, you can install wire without terminations for future use, or you can install empty conduit (like smurf tube).
Summary summary: Use the old wire to pull new wires, or allow access to it to pull new wires later, or if it's stapled in place abandon it. But leave a coule of phone jacks in place.

