I think its stupid that I might spend over 50k on a module and cant store it so I can equip it to my next ship. I know I can sell it to the station and buy it back again but its always at a loss.
This question has been asked, many times. Also answered, many times. The "Search before asking question" tactic may be your friend in this respect.
I just searched for this question and found this thread first. If you're going to troll the thread by answering the question by saying it's already been answered and being condescending and sarcastic to the op, at least post links to the other answers.