I used to make some good money back before mining become so difficult. With the network the way it is now, its nearly impossible.
yes. mining with the old system is pretty much impossible nowadays. but you can do altcoin mining with low mining equipment.. and altcoin mining is now very profitable too.
so if you have those systems try to mine altcoin, you'll get good profit.
nowadays, for mining altcoin i think its a good idea while we can get good profit like extrabyte said because the rate of altcoin is really good at this point and we can get more profit too.
there are many altcoin which have low difficulties to mining and i am sure if you have small until middle equipment, you should have a good profit when you sell it into bitcoin. maybe you can try to mining emc2, ltbc, flo, or else.