Going for Masters and PHD straight after your bachelors is not always a wise decision. It may be good for a few selected profession(like teaching, scientist etc) but not for all. Say a guy did bachelor in finance (at 21), then did master at (23), did another certified degree(25) leave alone PHD. So now this guy would go for a graduate type job as he doesnt have a real world experience and then after 2 years he realise that finance is not his destination. He developed an interest for systems and decide to become a business analyst or say system analyst or may be IT consultant. Now he is 27. Start a new career and may be at 31 he has some degree in IT and probably working at another IT entry level job.
The above can be true for any profession/trade. say for IT or engineering.
Now here is another guy. At 21 bachelor in finance. Got a entry level job. After 2 years moved little bit up. Decides this is what he want to do. Do another set of certification and degrees part time. At 25 he is at middle level with those degrees.
Even he realise at say 22 or 23 years that finance is not for him then that time he could go for an IT degree and say at 27 would be in his desired filed with a degree. So he is 4 yesrs ahead of guy in scenerio 1.
These are hypothetical examples. But what this show is that its not always wise to do all your degrees and realise later this is not what you wanted. Because real life work experience is very much different to the theories that we read at school. Its not a bad idea to work for a year or two( not internship 2 years full time job in real world) in your field and then go for higher studies. Also lot of companies support studies so you can save money there. They claim it in deductions and you save your pocket.
Different profession has different needs and that should determine the course you take. Like for a sales manager. One with PHD in sales but no work experience and other with proven track record in sales even though he has just bachelor would be more attractive to employers. I wont care if my sales manger has a great proven track record but no PHD. PHD or Masters he/she can do later. He wont be applying all the theories what he read in masters at this stage. He has to be as high as VC or director when he would need this. And lot and lot of employers already know this or are realising this that unless your can deliever where it matter your degree is just a piece of paper for which you have wasted your time and hard earned money.