There are not many chords you can't play if your fingers can cover 3 frets. Three of the five
C.A.G.E.D. system chords can be played without undue stretching.
The Anatomy of a C Major Guitar Chord - The CAGED system
By bass runs, if your talking about blues shuffles, you can employ your pinkie too for the four fret stretch.
Stretching is like exercising. Your never to old to benefit from it. Welcome.