Many countries (including Singapore) promote Biology/Lifescience as a very good major with plenty of jobs after graduation. However, students may want to read some opinions from multiple sources to get a balanced viewpoint.
According to most of the answers, it is recommended that students truly love biology to pursue it in university. Also, many answers comment that a Bachelor Degree is usually insufficient for a good job in Biology/Life Science, and even people with advanced degrees can face problems finding relevant jobs.
You asked so I will give you an honest answer. I am a 64y old career biologist. I can speak freely. I could not with a clear conscience recommend biology as a career. It might sober you up that I got tenure one month after I turned 60y old. I am not being a snob. I am a first generation graduate. I do admit I have had a long and interesting career but at the cost of no wife, no children, no family and no job security before becoming too old for such domestic things.
- One of the answers at Quora