Stacked Rationale

Hello!
Q: What is the rationale behind not being able to stack any item in the game except coins and seeds?
What are pros and cons on this matter?
I see only con. Eternal lack of space.
Q: What is the rationale behind not being able to stack any item in the game except coins and seeds?
What are pros and cons on this matter?
I see only con. Eternal lack of space.