large personal purchase

Hey guys,

I'm trying to justify making a large purchase on a bicycle. It comes out to about $4,400 CAD. I make $150k a year, contribute 20-25% of my paycheck to my RRSP and TFSA, and my emergency fund is fully funded. I consider myself fairly disciplined with my spending and I live below my means. I'm looking at a fairly expensive bicycle that I can ride to work (20km round trip) and go for rides with my girlfriend on the weekends. I know I can definitely afford it and I think I'll put it to good use, but I'm experiencing a bit of hesitation about buying it. Is this a feeling anyone else has experienced when making purchases that aren't necessities? And how did you justify the purchase?