First of all, what even is 띄어쓰기?
띄어 means 'apart'. And 쓰다 means 'to write'.
So, 띄어쓰기 refers to the correct spacing between words!
Let's take a look at these 2 sentences:
1) 바래다 줄게 = Let me see you off
2) 바래? 다 줄게 = You want it? I'll give you everything
The words that are used are identical on the surface but the different spacing of these words change the meaning of them completely!
바래다 주다 = to see someone off (accompany someone to their destination)
바래? (You want it?) 다 줄게 (I'll give you everything)
See? You could be flirting with someone without even knowing it!
Need more convincing? Here is another example:
1) 고양이가 죽을까 봐 = Because the cat might die
2) 고양이 가죽을 까봐 = Hey, skin that cat
In the first sentence, you are worrying about the cat that might die.
However, in the second sentence, you come off as a psycho that is asking for the cat to be skinned!
Don't be the guy in the second sentence - worry about the cat!