I have calculated all my trades on the various platforms i have used in the last couple years.
Deposited: 47BTC (roughly)
Withdrew: 40BTC (roughly)
Overall i am happy with the results, i would pay 7 BTC anyday for what i have learned so far.
Now the question is: what the fuck do i do now with my money.
well yes you lost 7 bitcoins and that is really a lot, but like you mentioned, you learn a lot about trading, you know how price could change in future so you can earn profit now
but if you don't want to trade anymore then you could try to invest in gambling or other site so you will get profit without doing anything hard or thinking too much