grammatical problem
why there are ser and estar forms when we can use just one form?
3 Answers
A Spanish native might ask "Why are there is and on, when we can just use one?"
Because in English these have different meanings, and that difference is important.
Ser and estar are not the same. Ser is permanent, estar is temporary.
You will find the grammar sections for "ser" and "estar" to be very helpful in answering you question.
With languages in general, not everything translates exactly the way we think and say
No. Both are diferents
Yo soy abogado. Yo soy alto, yo soy Rubio.
Yo estoy cansado, yo estoy bailando, yo estoy en la oficina.