Why do marketers feel they most make every thing fun?

I was just listen to an ad on the radio for a computer repair place.

In the ad they had people saying how much they like the service. One of the people, an older sounding guy said that he watch them fix and was having a ball doing so.

now I have to ask how boning is this guys life (or how boring do the advertisers think our lives are) to think that watching your computer get fixed is fun.

and this isn't the only time I've seen/heard ads that try to make boring things (that we need or need done) sound fun.

instead of making things sound fun why not just tell how good your product/service is.