What makes a good welding table?

[buffalobo]

I question the need to change table height. Holding corner of table up while you manipulate the leg is typically PIA. By nature welding tables are heavy. The more you add the heavier they get.

[ChickNorris]

I question the need to change table height. Holding corner of table up while you manipulate the leg is typically PIA. By nature welding tables are heavy. The more you add the heavier they get.

Yup. This ^^^^

But I do still want to hear why.