We lose more by having the habit of not trusting until we have a reason than by choosing to trust first before a reason not to trust any more shows up.
Choosing the latter, yes, would lead to unpleasant consequences when those you trust for no reason disappoints. But at least, it would leave the doors to the heart on both ends open, until the heart finds someone trustworthy enough to keep.
On the contrary, choosing not trust at all until you have a reason to trust is sure going to make you suspicious of everyone you meet at the first time.
The suspicion could also, lay the foundation to stereotype those who don’t fit into the culture of those you call, “mind”.
Suspicion and stereotyping have caused a lot of people to lose opportunities to make great friends and find great team mates to complete them and help them realize their dreams.
It’s not easy for people with difficult-to-trust attitude to change and move in the opposite direction. Making the transition takes time.
This period of transition would have been saved and great relationships built if one had a trusting attitude.