Neither Bloody Nor Bowed

They say of me, and so they should,
It's doubtful if I come to good.
I see acquaintances and friends
Accumulating dividends,
And making enviable names
In science, art, and parlor games.
But I, despite expert advice,
Keep doing things I think are nice,
And though to good I never come-
Inseparable my nose and thumb!