There are many strategies we can employ with fixed income. But the only mistake we should avoid is to keep jumping between strategies, chances are we time it wrong and achieve the worst performance from all the strategies. For example when rates were low we chose MBH and now when rates climb, we are scared and we sell MBH and moved to T-Bills. This would be kind of locking the losses. Either stick with T-Bills forever or MBH forever.
Peter Lynch made a famous video about how nobody can predict interest rates.
Let me try this one last time.
If you want certainty, stick to single bond. Not bond funds. That way you can immediately determine your returns based on your investment horizon. Any mark to market movements won't affect you.
If you just want exposure into an asset class that can some additional returns while having low/negative correlation with equities, then investing in bond funds can make sense, but it is not straightforward when yield curve inverts.
Generally there is a fair risk return profile when the yield curve is upward sloping. Meaning to say we are paid fairly for taking more duration risk by holding on to higher duration products.
We are now seeing the complexity of FI. THE YIELD CURVE IS INVERTED. No one is making a prediction here. We know the yield to maturity, we know the duration of the bond funds we are comparing (MBH/A35 and its alternatives). These are factual figures that we can use to base our judgement on.
For those folks that are still not convinced, just be aware that there were scenarios where Europe sovereign ETFs that actually had negative yield. Going by the logic of some folks here it's perfectly ok to hold on to it.
Think I said enough of this. Thanks.