I disagree what the others are saying. Bitcoin mining is not profitable if you mine it solo using your own rig but it is possible if you join mining pools like Nicehash. It then depends on the algo that you want to mine. Ethash for Ethereum as an example. If you're going to start mining you need to consider how many graphics cards are you going to invest in, because if you are just going to buy 1 GTX 1080ti then it is not profitable but if its 6 to 7 GTX 1080ti then it is possible to profit from it as GPU mining is dependent on the computing power of the graphics cards, in case of GTX 1080ti, it has 11 gb with 32 Mh/s using Claymore eth miner. So with 6 GTX 1080ti you'll have ~192 Mh/s which is relatively a good hashrate for a mining rig. The average return of investment is within 6 - 10 months. After that is pure profit. You can also mine with your CPU to make the most out of the motherboard since all the dedicated mining motherboards today are already 1150 LGU model so there's no problem if you but the latest CPU you can afford to mine Moreno (Popular for CPU mining).

In mining, you should be aware that you're going to spend a lot of money for the graphics cards as it costs 12k - 66k depending on what brand and series you're buying and it's just a part of the rig. You need to consider the motherboard (B250) ~9k and PSU (gold/platinum) ~10k (?), 4 gb ram ~2.5k, CPU (varies), etc. that you're going to buy as well. The location is also considered because of the loud noise that the rigs are going to generate, the electricity cost that the rigs are pulling (monthly billing) in our place it's 10php/kwh, and the temperatures of your rig you might get an airconditioning if you can't keep the temperature below 80C as 50C~60C is the ideal gpu temperature. I also want to include the stress and troubleshooting that you're going to face if you're new in mining. It is advisable to stick with windows OS.

Overall if you're prepared to do all that then go ahead and mine. It is still feasible and ROI is subject to change depending on the market. Do mind that you need to consider this as an investment because this involves risks after all.