It's correct? How you write this? A lot of customs were originated in the last century, that’s why/for this reason nowadays many of them are obsolete though they used to be very important to society of that time. I'd like to know if I write "that’s why" or "for this reason" the means is the same or change, which is better? What's the position of nowadays? I should use other word intead of though, even though, although maybe? Help me please, thanks