This is true the stuff you paint on your nails really is vile tasting and it takes a long time to get that taste away, so if you buy the stuff Do Not Bite your Nails. lol..
Funny enough you can actually warm to that...
Reason being when my cousin was younger she used to suck her thumb... Alot. So her parent my Aunty brought that weird thing that is supposed to stop you sucking your thumb.
You dunk your thumb in and it taste so bad they do not want to do it... I tried it and almost threw up... She warmed to it and did not bother her, so they tried nail polish, remover, paint etc and she just warmed to them and stopped eventually but everything they tried it did not work lol.
I think, take a look at your nails and then everyone elses and think.. Do you really want the horrible nails to go like that or would you like nice nails and then force yourself to stop.