No, No, No! No beating up yourselves!
I think SYC is a success if we even force ourselves to slooow down and think looong and hard -- like you did here
I'm also hoping that I'll be hanging onto some SYC-ish thinking and criteria well beyond just May.
What good would it really do if we (by that I mean *I*) go back to old ways come June 1st (with my old ways being: buy now, decide later. . . ). I make a lot of work and use up a lot of time when I'm too easy with the purchases. Not to mention the way my closet never settles down. . .
Anyway, no beating yourself up because of one good purchase in a month!