this makes more users want to just buy instead of mine it.
Why would they buy it instead? Usually, when someone wants to mine, he does it by ensuring he'll have a profit from this procedure. If he buys Bitcoin, how can he be sure that he'll increase his earnings?
first. someone doesnt join bitcoin to mine.. they join to get bitcoin..
the way they get bitcoin then becomes a decision. some prefer trading and dont want to mine no matter if its cheap. some will mine no matter the price.
some look at the price. vs cost. and then work out the best way
so to answer your question why buy..
because there are occassions where its not cheaper to mine!!!
(unless willing to sell your house and move to another country)
its better to ask it in another format..
why do greengrocers buy banana's..
because they are speculating they can later sell banana's for more then they bought them for..
part of this is deciding should they farm their own.. which has a cost. or find a simple method to obtain banana's if the wholesale price of banana's is cheaper then farming this season in their region
most regions find it cheaper to buy banana's than to farm them themselves.. and so they do that.
and thats basic economics. .. of every 'produce'
the real question is not why buy if they want to mine.. the question is why mine if you can buy cheaper
EG when the price was $30k but american hobby miners had a $35k mining cost.. why would they mine.. its cheaper to buy
and now you understand that different regions have different margin zones that have a pivot point of that decision. which is where most of the 'support levels' and resistant levels occur