I don't hate mine, but have strongly disliked it at times. It has been a journey and it's still fighting me now on some areas. The car has evolved rather than been built first time. I would have saved loads of time, effort and money if I'd have built it to even where it is now, first time around.
And still, I'm thinking about re-mounting the engine again (correctly IMO - mk1 FRS in puma) which has a knock on effect to other stuff!
But when I go past something new and person driving it feels like it's he fasting thing on. The planet, all that effort suddenly becomes worth it. Or when someone randomly comes up to you in a car park and starts asking questions and talking cars. You don't get that with modern stuff - everyone can out everything they need to know just by looking at the car and/or the badges.