There is a fact that technology is dominant when it comes to jobs or settle down soon and there are million of people who do jobs in technology. There are huge requirements in technical fields, but being in Arts is very hard you need a lot of dedication, yes there are many singers trying to breakthrough in the industry. Being a singer and trying to make it as a passion is great and yes riskier.
But the more the riskier your job becomes the more you tend to work hard. I would say go with your passion, do not listen to anyone else, convince your family/father that you can make it as a singer and you have to make it to prove yourself. You know, being in technology is lot easier compared to being in arts as I am from technical background yet love to be an painter/artist some day, in technology you have resources to help you and grow but being an artist you are your own resource, you have to be creative and distinctive now a days to be successful.
If you fail to become a successful singer independently, you can try again by start working in technology jobs and practice on your passion which many people do. People do regular jobs because you need to make a living first and then work on your passion more and more, but the downside is if you get a comfortable life because of your job, people tend to lose or forget their passion on the way, this you need to take care and do not lose the hope.
All the best!