Originally Posted by
noob
Nowhere does it say you have to practice invocations.
Unlike for skills which have rules(that are optional) that indicates increasing skill ranks takes time.
Furthermore if your bard does not use music you need charisma to use spells and not everybody have charisma.
While warlock does not have stat requirement suggesting that invocations does not needs any sort of understanding: with only ones as stats you could use EB and the invocations just fine.
Also lazyness is not the same thing as ease.
There is things that are easy to do that are not lazy at all because it takes long amounts of time.