It also depends what sort of a career you are looking for. If you a looking for highly paid and constant work, archeology/history probably isn't for you.
However, if you are interested in doing some voluntary work, and are really passionate about your area of interest, or are not particularly concerned about earning a lot of money, then by all means follow this path. Historians can do many things, from writing history novels and teaching to researching, museum curatorship or advising, or even film/television production (think Attenborough, but history not nature!).
Likewise there are many opportunities for archeologists if you are willing to travel/work at low or no pay. There are many interesting archeological ventures in obscure regions of the world where little work has been done before, and often interesting discoveries are made. I believe that a lot of archeology ventures in remote areas are probably self-funded, or perhaps sponsored by museums or history foundations, but if it is something you are passionate about, I personally think it could be very exciting. If you do a double major in history/archeology, I would imagine the opportunities are there especially in museum work/restoration, or research.
Don't let people put you off history or archeology just because they don't think it would be interesting, or because their view of a successful career is one in which copious amounts of money are earnt. If you think it's interesting and are willing to work hard and create your own opportunities, don't let anyone talk you out of it!
Here is an article from earlier this year which might give you some inspiration:
http://www.abc.net.au/news/stories/2008/05/05/2236033.htm