To save money

I will consider this problem through some questions.

1. Is it really useful for the trip?

2. Can I use it in my daily life? If I would not carry it in my daily use, I had better not buy it.

3. Do I already have other replaceable bags for the trip?

These questions lead me to only one answer that is "I should not buy it."

BUT, I want to buy it......TT

SAVING MONEY

I WANT TO BUY A MINIBAG FOR MY TRIP.  IT SEEMS LIKE IT WOULD BE VERY USEFUL FOR TRIPS.  HOWEVER, I HAVE TO DECIDE WHETHER TO BUY THE BAG OR SAVE MY MONEY.  

I WILL NEED TO ANSWER THESE QUESTIONS TO HELP ME DECIDE:

1.  IS IT REALLY USEFUL FOR THE TRIP?

2.  WILL I USE IT IN MY DAILY LIFE?  IF I WILL NOT USE IT REGULARLY IN MY EVERYDAY LIFE, I SHOULD NOT PURCHASE IT.

3. DO I ALREADY OWN BAGS THAT I COULD USE FOR THIS TRIP?

THE ANSWERS TO THESE QUESTIONS LEAD ME TO BELIEVE THAT I SHOULD NOT BUY THE BAG, BUT I WANT IT ANYWAY!