It's no different than spending $2500 for top end work, or $1800 for A/C overhaul. Based on the car's value, yeah, it may not be worth it.

If you plan to keep it, then it's justified...illogical, but justified. I'm in that situation with a couple of my vehicles....far more invested than they're worth.

Consider this despite the rants regarding the car's worth...if it get's t-boned tomorrow, do you think the insurance company will award you damages including reimbursement for the expensive paint job?

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car