If you are cash parked or have considerable funds held in cash for ‘opportunity’ investing you may choose to invest soon or hold and wait. Nobody can call the market or indeed the risk of virus spread and market falls, so either way we are all gambling. We have made our decision to invest now as most markets fell well below their year lows but you must make your own decision, we cannot make this for you.
If you are already invested and have suffered losses, know that markets will recover as soon as a vaccine is delivered, expected in the summer. Quantitative easing could push markets even higher, so you may choose to ride it out. Remember, you have only physically made a loss if you actually cash in or switch out of markets into safe havens.