Usable fruits

I was having a watermelon yesterday, when this thought came into mind. A seedless watermelon would be so nice. No fussing around with the seeds. No fumbling with the tongue to get the seeds out.

Then found out on the net that there is indeed such a watermelon. Surely all of you have eaten seedless grapes. I guess 99% commerical grapes are seedless. So I guess due to their user friendly nature these seedless fruits would qualify for “usable fruits”, wouldn’t they?

A little more research gave me this:

All of the above techniques for seedless propagation have one serious flaw: they lead to a decline in biodiversity. Because they involve essentially making carbon copies of one plant, if an agricultural disease which targets that plant evolves, it can spell big trouble. Many famous cultivars of seedless fruit, for example, are grown all over the world, and these stocks could be extremely vulnerable to disease or pests. The decrease in biodiversity is also bad for the species in general, as the more diverse a species is, the more likely it is to survive, as a general rule. read more here.

So I guess there’s nothing called a free lunch. On one hand these are useful to the customers. On the other hand very vulnerable to disease. Which explains the need for industrial pesticides. And how these pesticides find their way into our bodies.

Are their any other examples where usability has a really bad side effect?