Each to their own to be honest, I recall my late Dad having a private plate on his car and all the hassle we had getting it changed onto new motors and actually selling it after he passed away.
The thing that cheeses me off is when people change the fonts on their plates to make letters/numbers suit their names etc. I saw a car yesterday where the owner had changed the font on a number 7 leaving it with a slight curve on the top in an attenpt to make it look like a 'Y'. The rest of the numbers/letters were left standard so the whole plate looked well stupid (to me anyway).
If you like personal plates, superseb, then that's all that matters.