It's impossible for us to immediately believe in bitcoin when we just got to know it, right?
The motivation you say from speculation that others say makes us more excited. And we can also see how many people end up having to panic because of spculation that says bitcoin is smething bad and has no future or that says bitcoin is a scam. It proves that this does affect bitcoin holders, especially those who are new to bitcoin.
People who are new to Bitcoin can easily be vulnerable or influence by speculation or bad news against Bitcoin, let's take for instance a beginner who has less knowledge about Bitcoin and just started accumulating some good amount of Bitcoin for holding and perhaps he heard people saying all kinds of awful things about Bitcoin that the price is crashing or Bitcoin price will not do well in the future, you will see that after the beginners had listing to those negative speculation his mindset and emotions or passion he has for Bitcoin will be seriously affected were as he start panicking and sell off his accumulated Bitcoin, so perhaps we should focus on positivity and shouldn't allow speculation influence our perception on accumulating Bitcoin.