What are the most difficult things about learning spanish

Hi everyone! I am a spanish teacher on this webside website and I was wondering what do you guys think is the most difficult thing to learn in spanish Spanish. Is it maybe the subjunctive, the verbal tenses, the gender of the nouns? And what do you think is the easiest?
Ans And also why do you want to learn Spanish? :D

N.B. For me, it was the distinction between para and por, and when to use estar or ser. I learned Spanish because there are many Mexicans here in my South Carolina community.

Hello Italkian friend and mate. Good to hear from a teacher.

What are the most difficult things about learning spanish  Spanish?

Well done! Sorry to be correcting a text that is not supposed to be a lesson but just a question!
No answering your question, I may say that as for me, the most difficult things are the verb tenses (subjunctive) and prepositions, millions of them! I'm also confused with such variety in terms of vocabulary. One thing in Colombia might be a four-letter word in Chile and vice-versa. That is it!

Thank you, Good Job!