Because its annoying to Pick Drill > Drill Spot > Pick Dynamite > Place Dynamite > Pick Dynamote > Tag > Pick Dril l > DrillSpot > Ad infinitum.
Just saying,i love to use dynamite to clear caves for construction (Working with buildcraft machines its a little annoying and totally boring), theres nothing better to see a entire wall dissapear with the pressing of a button
Recipe:
Dynamite + Dynamote = Pre-Tagged Dynamite.
The dynamote should count as a container item (Like buckets), so it doesnt get consumed each craft.