language agnostic - Should I use `!IsGood` or `IsGood == false`?

Question

I keep seeing code that does checks like this

if (IsGood == false)
{
   DoSomething();
}

or this

if (IsGood == true)
{
   DoSomething();
}

I hate this syntax, and always use the following syntax.

if (IsGood)
{
   DoSomething();
}

or

if (!IsGood)
{
   DoSomething();
}

Is there any reason to use '== true' or '== false'?

Is it a readability thing? Do people just not understand Boolean variables?

Also, is there any performance difference between the two?

Answer 1

I follow the same syntax as you, it's less verbose.

People (more beginner) prefer to use == true just to be sure that it's what they want. They are used to use operator in their conditional... they found it more readable. But once you got more advanced, you found it irritating because it's too verbose.