I see no difference if I give my cats love or not the results are simular.
And I agree with Tad here we tend to remember bad luck better than good luck especially if we payed to fasten the process hoping to have good luck but it actually isn't what we hoped for

In general I think it is not in the best interest of KittyCatS to punish us for buying love or build in unknown handicaps this would harm their business in the long run.