Purple Heby,
Yes, if you can correctly assess when the stock market is going to dip into a bear market or a crash as this one looks like now. The it would be great to sell your units and hold as cash until the market stars to recover BUT if you miss out on the best 10 days of the year (ie) the early part of the recovery then you will end up worse off.
It is too late to pull out now, if anything buying low is a good way to go but sticking to your monthly investments is worth it. I only pulled out a year ago as I felt a bear market was going to happen but also I was getting ready to move out of the UK.
Currently, I do day trading (riisky though) for a little exposure to the stock market, mostly selling the FTSE and GB Pound but am going to start a monthly drip feed back into recovery unit trusts this week. Any investments into the market has to be minimum 5 years, especially Unit & Investment Trusts but if you can't take a risk then stick to a "safe" bank account if you can find one.
Also, more importantly if you can spend a couple of hours a week learning about investments and reading financial magazines and websites you can soon make decisions to switch from one unit trust to another or when to switch into cash unit trusts. Since 1998 I have made 140 times my original investment using unit trusts, Investment Trust Warrants and Property.
I never took any advice from professionals, until last year when I went on a short seminar to learn charting. I was probably very lucky in the first 2 years and went against other people's views sometimes so it shows that individuals can make their way through the "financial maze" as I used to think it was in 1998.
If you have a good few years to retirement, your unit trusts should prove better than a bank from now on (as long as they are not invested in banks)
Finally, I was making a rather large deposit into CD's (term deposits) in a bank in Las Vegas back at end of July. They tried to get me to see their finacial adviser as he was in the branch at that time so I listened to him spout off about the fact that I should be investing a third of my cash in Bank Stocks and Energy Stocks!!! He was working for WACHOVIA INVESTMENTS but his portfolio has dropped by well over 50% in just over 2 months. My deposit is also with Wachovia but fully guaranteed and now being looked after by Wells Fargo. Just an example of what can happen if you trust someone else to manage your investments, but their are many great advisers out there so just do you homework.
Good Luck.