Should I go with a suspension fork?

I've got a wonderful old Trek 970 that I've put more miles on than I can count. I'm getting older and have never ridden a bike with front suspension. Would it be worth it to go with a Rock Shox or whatever? I don't want to dump a load of cash into a fork, I ride about 30 miles a week off road, some weeks more, some less.
I guess I'm just curious as to how this would affect my ride, comfort etc. I know I'm being pretty vague but I've been out of the loop in bike tech for a long time, just started riding again, and see that almost every bike out there has some form of suspension. When I got this, rigid was the norm, now I don't think Trek even makes a steel bike anymore. Anyway. Any input would be appreciated.

 

might have a problem finding a fork that fits...might be able to find one from a hybrid that will work with your head tube

good luck

 

A cheap sus fork is a waste of money.Make sure you get a decent fork if you upgrade.
If your BODY is indicating that you need some suspension.If you ride bumpy trails and like to cruise down gravle roads.
Its time to upgrade to a full suspension.
Every now and then i ride my old trek ridgid and then I appreciate my full sus when i cruise over those bumpy roads.

 

On an older bike the geometry may not like suspension forks.
As a rough calculation you will lose 1 degree of head angle for each 1 inch of fork length you gain and this can result in slow handling/steering.

Cheers.

 

I am going the other way. I have a Trek 6500 and I am slowly changing over to a hybrid. I have put on a set of Cane Creek 700 wheels and road tires. I have changed the largest chain ring to a 48. I want to change the middle chain ring, go to a carbon ridid fork (Excite), and a nicer seat. When I change the fork out Ill have a Rock Socks Team suspension fork???

Mark