For the love of it Shan. It's a hobby, and it was my first car. I didn't even sniff at the last round of mods early this year - manual conversion, hydraulic clutch conversion, straight cut gearset, Nismo 1.5way LSD cost me ~$8800. Yes I could buy two stock N15's for the cost of the conversion alone but meh, it doesn't phase me.
See that's okay with me, because I'm not under the illusion I'd make much more than 20% of the money I've spent on it back. Realistically the car would sell for between $12-15K, more if I parted it. You don't mod cars for resale value - which is fine, because I don't intend to sell it and I'm not strapped for money, it owes me nothing. I currently have three cars.