I think if you read some articles from chronicles of higher education, you'll find that Ph.D. in Biological field actually reduces your chances of getting a better paying job than say Master's Degree. So here's the decision you'll have to make.: Enter Ph.D. work like a slave for years and realize that noone wants to hire you in the industrial sector as you're overqualified and the only option left is post doc, another 5-6 years in today's world, OR work in the industry now and make more money. Of course, if you're passionate about research do Ph.D., but dont' think dreaming that you'll make more money after Ph.D. Its a myth. Professors always always always pressurize you to go into academics as they all think through their myopic lense of academic research!