is necessary to use "to" in this sentence?

[F14f21]

hi
I've met a sentence which i can't understand why the author used "to" :

(( He had never needed as much sleep as other people and now this was to his advantage))

you see, if i remove "to" in the sentence, is the sentence still correct ?
and if so, why the author use "to" ?
thanks in advance
hamed

[Our Tort System]

No, I suppose "to" is vital here, if you remove it the meaning will change.
If something is to your advantage it is beneficial to you. (getting enough sleep is always to your advantage)
If something is your advantage it is a trait of yours that gives you an edge over other people (in a competition for instance). (your strength is your advantage in any competition)
_________________
If it's not easy, don't do it!
That's how I got where I am.

[F14f21]

first of all thanks for your time

so, you mean when i remove "to" it means the advantage is your gift ?

[Our Tort System]

[F14f21]

thank you very much