Using 50% of your salary seem too high for me because is more like aggressive investment because let say your monthly basic salary is $200 and when we remove 50% you will be left with $100 so however is obvious that within the month there is every possibility that you will spend it all, and perhaps if you have a family you will have to take care of your kids needs as well as your own needs so there is every tendency that $100 will not be okay to solve those needs before you could receive another salary.
So in as much as you are eager to accumulate as many Bitcoin as possible doing it in a wrong way will result to tempering your accumulated Bitcoin, so I would suggest that instead of using 50% of your salary you could cut it down a bit to may be 10% instead because it will allow you to have a breathing space such as having a good reserve funds that could possibly take care of any needs while you keep accumulating consistently on a weekly basis.
I think everything depends on what is your plan and the target you have set for yourself. Let's say I set a target of having of having a particular amount of Bitcoin before the next halving and I have calculated that investing 10% of my salary won't allow me achieve that, but spending 50% of my salary will help me achieve my set goals. All I have to do is cut down some of the things I spend money on which are not really necessary to achieve my set goals. Also there is a possibility that I don't have a family yet and I don't have any kids yet. So instead of spending on women, alcohol, parties and eating in restaurants etc. I can reduce these things and make my own food at home. If I do these things $100 will take care of me for a month if we are using the $200 you talked about as monthly salary. And mind you as a man it's not advisable to only have one source of income. So let's also assume I have another business that gives me like $40 weekly I will be fine with investing 50% of my basic salary from my other job.