eh...
I look at it a little more holistically than grandeko.
If you bought a car to be "practical", you'd probably buy an excel, or maybe a micra.
If you buy a jap sportscar, you probably bought it to enjoy it. for some, that means putting micky-T's on and aiming for 9s. for some, circuit racing at the plex. others still will choose to go down a different route and buy 19 inch rims.
19 inch rims generally make the car drive worse, slower and cost a fortune to buy and insure. But no one ever really gives a shit...
I reckon if a bov makes you enjoy the experience more, and contrbutes to the fun you have because you get to scare old ladies in the tunnel, go a bov.
If not, then eh!?