Do I need a surface grinder?

[Silverbullet]

I've a very old cast iron surface plate , before granite became the rage. It's only as accurate as the user. My surface grinder is a substantial machine by size and construction. But I'd put it's abilities up to the best ones made now. Even my mag is built it's about 14"x 24" and it was fresh off the floor of accurate machine tool in Philadelphia Pa. I only found one tiny shield missing a screw . The owner told me the handle needs a shim but it's not even enough to show up in any grind operation . Now it's a landis 1 1/2 model and weighs about a 1,000 lbs . Another reason it grinds so well. Some machines just need to be heavy and these are the ones.
I'm just hoping I can get the shop set up and working or ill be selling a great surface grinder . Do you need one I'd say yes if you plan on making tools.