If you've reached 100 Hubs, it may be time to sit down and think about your strategy.
In 2011 many changes were made to the site, and Hubbers with over 200 Hubs struggled to keep up with all the Hub revisions necessary. Some of them had their Hubs unpublished because they failed to meet the deadline for updating them! So personally, I wouldn't recommend anyone write more than 200 Hubs.
The other reason is - don't put all your eggs in one basket. You have an Adsense account, you can use it to earn on other sites too. You never know when HubPages might go broke, or get bought out, or change its rules in a way you don't like. I don't think that's likely for HP, but several other writing sites are no longer in business, or have lost their good reputation. You don't own this site so you can't be too careful.
Spread your work around Squidoo, Wizzley, Xobba, Infobarrel, Seekyt etc. Also, take a look at your traffic. Is there a topic that's dong really well? That would be a good topic to start your own blog on.